diff --git a/.eslintignore b/.eslintignore
index 6097957a12..c805ab0203 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -6,7 +6,7 @@ utils/testrunner/examples/
 lib/
 *.js
 src/generated/*
-src/chromium/protocol.ts
+src/server/chromium/protocol.ts
 src/firefox/protocol.ts
 src/webkit/protocol.ts
 /types/*
diff --git a/src/client/cdpSession.ts b/src/client/cdpSession.ts
index 867c603bb5..e71a3b0eda 100644
--- a/src/client/cdpSession.ts
+++ b/src/client/cdpSession.ts
@@ -16,7 +16,7 @@
 
 import { CDPSessionChannel, CDPSessionInitializer } from '../protocol/channels';
 import { ChannelOwner } from './channelOwner';
-import { Protocol } from '../chromium/protocol';
+import { Protocol } from '../server/chromium/protocol';
 
 export class CDPSession extends ChannelOwner<CDPSessionChannel, CDPSessionInitializer> {
   static from(cdpSession: CDPSessionChannel): CDPSession {
diff --git a/src/helper.ts b/src/helper.ts
index 3e27e1ab84..c48c166f14 100644
--- a/src/helper.ts
+++ b/src/helper.ts
@@ -17,15 +17,12 @@
 
 import * as crypto from 'crypto';
 import { EventEmitter } from 'events';
-import * as fs from 'fs';
-import * as os from 'os';
 import * as removeFolder from 'rimraf';
 import * as util from 'util';
 import * as types from './types';
 import { Progress } from './progress';
 
 const removeFolderAsync = util.promisify(removeFolder);
-const readFileAsync = util.promisify(fs.readFile.bind(fs));
 
 export type RegisteredListener = {
   emitter: EventEmitter;
@@ -112,43 +109,4 @@ class Helper {
   }
 }
 
-export async function getUbuntuVersion(): Promise<string> {
-  if (os.platform() !== 'linux')
-    return '';
-  const osReleaseText = await readFileAsync('/etc/os-release', 'utf8').catch(e => '');
-  if (!osReleaseText)
-    return '';
-  return getUbuntuVersionInternal(osReleaseText);
-}
-
-export function getUbuntuVersionSync(): string {
-  if (os.platform() !== 'linux')
-    return '';
-  try {
-    const osReleaseText = fs.readFileSync('/etc/os-release', 'utf8');
-    if (!osReleaseText)
-      return '';
-    return getUbuntuVersionInternal(osReleaseText);
-  } catch (e) {
-    return '';
-  }
-}
-
-function getUbuntuVersionInternal(osReleaseText: string): string {
-  const fields = new Map();
-  for (const line of osReleaseText.split('\n')) {
-    const tokens = line.split('=');
-    const name = tokens.shift();
-    let value = tokens.join('=').trim();
-    if (value.startsWith('"') && value.endsWith('"'))
-      value = value.substring(1, value.length - 1);
-    if (!name)
-      continue;
-    fields.set(name.toLowerCase(), value);
-  }
-  if (!fields.get('name') || fields.get('name').toLowerCase() !== 'ubuntu')
-    return '';
-  return fields.get('version_id') || '';
-}
-
 export const helper = Helper;
diff --git a/src/install/browserPaths.ts b/src/install/browserPaths.ts
index 1fb534f880..94b6dc49f8 100644
--- a/src/install/browserPaths.ts
+++ b/src/install/browserPaths.ts
@@ -18,7 +18,7 @@
 import { execSync } from 'child_process';
 import * as os from 'os';
 import * as path from 'path';
-import { getUbuntuVersionSync } from '../helper';
+import { getUbuntuVersionSync } from '../utils/ubuntuVersion';
 import { getFromENV } from '../utils/utils';
 
 export type BrowserName = 'chromium'|'webkit'|'firefox';
diff --git a/src/rpc/server/browserContextDispatcher.ts b/src/rpc/server/browserContextDispatcher.ts
index 9c9c32e47f..3edcb5fe9e 100644
--- a/src/rpc/server/browserContextDispatcher.ts
+++ b/src/rpc/server/browserContextDispatcher.ts
@@ -19,7 +19,7 @@ import { Dispatcher, DispatcherScope, lookupDispatcher } from './dispatcher';
 import { PageDispatcher, BindingCallDispatcher, WorkerDispatcher } from './pageDispatcher';
 import * as channels from '../../protocol/channels';
 import { RouteDispatcher, RequestDispatcher } from './networkDispatchers';
-import { CRBrowserContext } from '../../chromium/crBrowser';
+import { CRBrowserContext } from '../../server/chromium/crBrowser';
 import { CDPSessionDispatcher } from './cdpSessionDispatcher';
 
 export class BrowserContextDispatcher extends Dispatcher<BrowserContext, channels.BrowserContextInitializer> implements channels.BrowserContextChannel {
diff --git a/src/rpc/server/browserDispatcher.ts b/src/rpc/server/browserDispatcher.ts
index 8bc90b222c..e2ecd9482c 100644
--- a/src/rpc/server/browserDispatcher.ts
+++ b/src/rpc/server/browserDispatcher.ts
@@ -19,7 +19,7 @@ import * as channels from '../../protocol/channels';
 import { BrowserContextDispatcher } from './browserContextDispatcher';
 import { CDPSessionDispatcher } from './cdpSessionDispatcher';
 import { Dispatcher, DispatcherScope } from './dispatcher';
-import { CRBrowser } from '../../chromium/crBrowser';
+import { CRBrowser } from '../../server/chromium/crBrowser';
 import { PageDispatcher } from './pageDispatcher';
 
 export class BrowserDispatcher extends Dispatcher<Browser, channels.BrowserInitializer> implements channels.BrowserChannel {
diff --git a/src/rpc/server/cdpSessionDispatcher.ts b/src/rpc/server/cdpSessionDispatcher.ts
index 49c88e6248..b748b27f1a 100644
--- a/src/rpc/server/cdpSessionDispatcher.ts
+++ b/src/rpc/server/cdpSessionDispatcher.ts
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { CRSession, CRSessionEvents } from '../../chromium/crConnection';
+import { CRSession, CRSessionEvents } from '../../server/chromium/crConnection';
 import * as channels from '../../protocol/channels';
 import { Dispatcher, DispatcherScope } from './dispatcher';
 
diff --git a/src/rpc/server/frameDispatcher.ts b/src/rpc/server/frameDispatcher.ts
index 96a985bd44..312ceffacd 100644
--- a/src/rpc/server/frameDispatcher.ts
+++ b/src/rpc/server/frameDispatcher.ts
@@ -15,7 +15,6 @@
  */
 
 import { Frame, NavigationEvent } from '../../frames';
-import * as types from '../../types';
 import * as channels from '../../protocol/channels';
 import { Dispatcher, DispatcherScope, lookupNullableDispatcher, existingDispatcher } from './dispatcher';
 import { ElementHandleDispatcher, createHandle } from './elementHandlerDispatcher';
@@ -38,11 +37,11 @@ export class FrameDispatcher extends Dispatcher<Frame, channels.FrameInitializer
       loadStates: Array.from(frame._subtreeLifecycleEvents),
     });
     this._frame = frame;
-    frame.on(Frame.Events.AddLifecycle, (event: types.LifecycleEvent) => {
-      this._dispatchEvent('loadstate', { add: event });
+    frame.on(Frame.Events.AddLifecycle, lifecycleEvent => {
+      this._dispatchEvent('loadstate', { add: lifecycleEvent });
     });
-    frame.on(Frame.Events.RemoveLifecycle, (event: types.LifecycleEvent) => {
-      this._dispatchEvent('loadstate', { remove: event });
+    frame.on(Frame.Events.RemoveLifecycle, lifecycleEvent => {
+      this._dispatchEvent('loadstate', { remove: lifecycleEvent });
     });
     frame.on(Frame.Events.Navigation, (event: NavigationEvent) => {
       const params = { url: event.url, name: event.name, error: event.error ? event.error.message : undefined };
diff --git a/src/rpc/server/pageDispatcher.ts b/src/rpc/server/pageDispatcher.ts
index 865647485e..8bf5c60b3a 100644
--- a/src/rpc/server/pageDispatcher.ts
+++ b/src/rpc/server/pageDispatcher.ts
@@ -29,7 +29,7 @@ import { RequestDispatcher, ResponseDispatcher, RouteDispatcher } from './networ
 import { serializeResult, parseArgument } from './jsHandleDispatcher';
 import { ElementHandleDispatcher, createHandle } from './elementHandlerDispatcher';
 import { FileChooser } from '../../fileChooser';
-import { CRCoverage } from '../../chromium/crCoverage';
+import { CRCoverage } from '../../server/chromium/crCoverage';
 
 export class PageDispatcher extends Dispatcher<Page, channels.PageInitializer> implements channels.PageChannel {
   private _page: Page;
diff --git a/src/server/chromium.ts b/src/server/chromium/chromium.ts
similarity index 92%
rename from src/server/chromium.ts
rename to src/server/chromium/chromium.ts
index f2a9ed3ec8..12289c70ac 100644
--- a/src/server/chromium.ts
+++ b/src/server/chromium/chromium.ts
@@ -17,17 +17,17 @@
 
 import * as path from 'path';
 import * as os from 'os';
-import { CRBrowser } from '../chromium/crBrowser';
-import { Env } from './processLauncher';
-import { kBrowserCloseMessageId } from '../chromium/crConnection';
-import { rewriteErrorMessage } from '../utils/stackTrace';
-import { BrowserTypeBase } from './browserType';
-import { ConnectionTransport, ProtocolRequest } from '../transport';
-import { BrowserDescriptor } from '../install/browserPaths';
-import { CRDevTools } from '../chromium/crDevTools';
-import { BrowserOptions } from '../browser';
-import * as types from '../types';
-import { isDebugMode, getFromENV } from '../utils/utils';
+import { CRBrowser } from './crBrowser';
+import { Env } from '../processLauncher';
+import { kBrowserCloseMessageId } from './crConnection';
+import { rewriteErrorMessage } from '../../utils/stackTrace';
+import { BrowserTypeBase } from '../browserType';
+import { ConnectionTransport, ProtocolRequest } from '../../transport';
+import type { BrowserDescriptor } from '../../install/browserPaths';
+import { CRDevTools } from './crDevTools';
+import { BrowserOptions } from '../../browser';
+import * as types from '../../types';
+import { isDebugMode, getFromENV } from '../../utils/utils';
 
 export class Chromium extends BrowserTypeBase {
   private _devtools: CRDevTools | undefined;
diff --git a/src/chromium/crAccessibility.ts b/src/server/chromium/crAccessibility.ts
similarity index 98%
rename from src/chromium/crAccessibility.ts
rename to src/server/chromium/crAccessibility.ts
index de94f274d2..ede3c94f28 100644
--- a/src/chromium/crAccessibility.ts
+++ b/src/server/chromium/crAccessibility.ts
@@ -17,9 +17,9 @@
 
 import { CRSession } from './crConnection';
 import { Protocol } from './protocol';
-import * as dom from '../dom';
-import * as accessibility from '../accessibility';
-import * as types from '../types';
+import * as dom from '../../dom';
+import * as accessibility from '../../accessibility';
+import * as types from '../../types';
 
 export async function getAccessibilityTree(client: CRSession, needle?: dom.ElementHandle): Promise<{tree: accessibility.AXNode, needle: accessibility.AXNode | null}> {
   const {nodes} = await client.send('Accessibility.getFullAXTree');
diff --git a/src/chromium/crBrowser.ts b/src/server/chromium/crBrowser.ts
similarity index 98%
rename from src/chromium/crBrowser.ts
rename to src/server/chromium/crBrowser.ts
index 8496896b07..0fe6f15f43 100644
--- a/src/chromium/crBrowser.ts
+++ b/src/server/chromium/crBrowser.ts
@@ -15,13 +15,13 @@
  * limitations under the License.
  */
 
-import { Browser, BrowserOptions } from '../browser';
-import { assertBrowserContextIsNotOwned, BrowserContext, validateBrowserContextOptions, verifyGeolocation } from '../browserContext';
-import { assert } from '../utils/utils';
-import * as network from '../network';
-import { Page, PageBinding, Worker } from '../page';
-import { ConnectionTransport } from '../transport';
-import * as types from '../types';
+import { Browser, BrowserOptions } from '../../browser';
+import { assertBrowserContextIsNotOwned, BrowserContext, validateBrowserContextOptions, verifyGeolocation } from '../../browserContext';
+import { assert } from '../../utils/utils';
+import * as network from '../../network';
+import { Page, PageBinding, Worker } from '../../page';
+import { ConnectionTransport } from '../../transport';
+import * as types from '../../types';
 import { ConnectionEvents, CRConnection, CRSession } from './crConnection';
 import { CRPage } from './crPage';
 import { readProtocolStream } from './crProtocolHelper';
diff --git a/src/chromium/crConnection.ts b/src/server/chromium/crConnection.ts
similarity index 97%
rename from src/chromium/crConnection.ts
rename to src/server/chromium/crConnection.ts
index f0b5f1e24f..8b6c162e32 100644
--- a/src/chromium/crConnection.ts
+++ b/src/server/chromium/crConnection.ts
@@ -15,12 +15,12 @@
  * limitations under the License.
  */
 
-import { assert } from '../utils/utils';
-import { ConnectionTransport, ProtocolRequest, ProtocolResponse } from '../transport';
+import { assert } from '../../utils/utils';
+import { ConnectionTransport, ProtocolRequest, ProtocolResponse } from '../../transport';
 import { Protocol } from './protocol';
 import { EventEmitter } from 'events';
-import { rewriteErrorMessage } from '../utils/stackTrace';
-import { debugLogger } from '../utils/debugLogger';
+import { rewriteErrorMessage } from '../../utils/stackTrace';
+import { debugLogger } from '../../utils/debugLogger';
 
 export const ConnectionEvents = {
   Disconnected: Symbol('ConnectionEvents.Disconnected')
diff --git a/src/chromium/crCoverage.ts b/src/server/chromium/crCoverage.ts
similarity index 98%
rename from src/chromium/crCoverage.ts
rename to src/server/chromium/crCoverage.ts
index ceb24a58ec..9a4d692d67 100644
--- a/src/chromium/crCoverage.ts
+++ b/src/server/chromium/crCoverage.ts
@@ -16,11 +16,11 @@
  */
 
 import { CRSession } from './crConnection';
-import { helper, RegisteredListener } from '../helper';
+import { helper, RegisteredListener } from '../../helper';
 import { Protocol } from './protocol';
-import * as types from '../types';
-import * as sourceMap from '../utils/sourceMap';
-import { assert } from '../utils/utils';
+import * as types from '../../types';
+import * as sourceMap from '../../utils/sourceMap';
+import { assert } from '../../utils/utils';
 
 export class CRCoverage {
   private _jsCoverage: JSCoverage;
diff --git a/src/chromium/crDevTools.ts b/src/server/chromium/crDevTools.ts
similarity index 100%
rename from src/chromium/crDevTools.ts
rename to src/server/chromium/crDevTools.ts
diff --git a/src/chromium/crExecutionContext.ts b/src/server/chromium/crExecutionContext.ts
similarity index 94%
rename from src/chromium/crExecutionContext.ts
rename to src/server/chromium/crExecutionContext.ts
index f3d9fc1ad9..087c0a7cb6 100644
--- a/src/chromium/crExecutionContext.ts
+++ b/src/server/chromium/crExecutionContext.ts
@@ -18,10 +18,10 @@
 import { CRSession } from './crConnection';
 import { getExceptionMessage, releaseObject } from './crProtocolHelper';
 import { Protocol } from './protocol';
-import * as js from '../javascript';
-import * as sourceMap from '../utils/sourceMap';
-import { rewriteErrorMessage } from '../utils/stackTrace';
-import { parseEvaluationResultValue } from '../common/utilityScriptSerializers';
+import * as js from '../../javascript';
+import * as sourceMap from '../../utils/sourceMap';
+import { rewriteErrorMessage } from '../../utils/stackTrace';
+import { parseEvaluationResultValue } from '../../common/utilityScriptSerializers';
 
 export class CRExecutionContext implements js.ExecutionContextDelegate {
   _client: CRSession;
diff --git a/src/chromium/crInput.ts b/src/server/chromium/crInput.ts
similarity index 95%
rename from src/chromium/crInput.ts
rename to src/server/chromium/crInput.ts
index 6b6edf9fe5..224c4e393d 100644
--- a/src/chromium/crInput.ts
+++ b/src/server/chromium/crInput.ts
@@ -15,11 +15,11 @@
  * limitations under the License.
  */
 
-import * as input from '../input';
-import * as types from '../types';
+import * as input from '../../input';
+import * as types from '../../types';
 import { CRSession } from './crConnection';
-import { macEditingCommands } from '../macEditingCommands';
-import { isString } from '../utils/utils';
+import { macEditingCommands } from '../../macEditingCommands';
+import { isString } from '../../utils/utils';
 
 function toModifiersMask(modifiers: Set<types.KeyboardModifier>): number {
   let mask = 0;
diff --git a/src/chromium/crNetworkManager.ts b/src/server/chromium/crNetworkManager.ts
similarity index 98%
rename from src/chromium/crNetworkManager.ts
rename to src/server/chromium/crNetworkManager.ts
index 57c3044962..6e3c2f6002 100644
--- a/src/chromium/crNetworkManager.ts
+++ b/src/server/chromium/crNetworkManager.ts
@@ -16,14 +16,14 @@
  */
 
 import { CRSession } from './crConnection';
-import { Page } from '../page';
-import { helper, RegisteredListener } from '../helper';
+import { Page } from '../../page';
+import { helper, RegisteredListener } from '../../helper';
 import { Protocol } from './protocol';
-import * as network from '../network';
-import * as frames from '../frames';
-import * as types from '../types';
+import * as network from '../../network';
+import * as frames from '../../frames';
+import * as types from '../../types';
 import { CRPage } from './crPage';
-import { assert, headersObjectToArray } from '../utils/utils';
+import { assert, headersObjectToArray } from '../../utils/utils';
 
 export class CRNetworkManager {
   private _client: CRSession;
diff --git a/src/chromium/crPage.ts b/src/server/chromium/crPage.ts
similarity index 98%
rename from src/chromium/crPage.ts
rename to src/server/chromium/crPage.ts
index c0240a48ad..1203fd70da 100644
--- a/src/chromium/crPage.ts
+++ b/src/server/chromium/crPage.ts
@@ -15,28 +15,28 @@
  * limitations under the License.
  */
 
-import * as dom from '../dom';
-import * as frames from '../frames';
-import { helper, RegisteredListener } from '../helper';
-import * as network from '../network';
+import * as dom from '../../dom';
+import * as frames from '../../frames';
+import { helper, RegisteredListener } from '../../helper';
+import * as network from '../../network';
 import { CRSession, CRConnection, CRSessionEvents } from './crConnection';
 import { CRExecutionContext } from './crExecutionContext';
 import { CRNetworkManager } from './crNetworkManager';
-import { Page, Worker, PageBinding } from '../page';
+import { Page, Worker, PageBinding } from '../../page';
 import { Protocol } from './protocol';
 import { toConsoleMessageLocation, exceptionToError, releaseObject } from './crProtocolHelper';
-import * as dialog from '../dialog';
-import { PageDelegate } from '../page';
+import * as dialog from '../../dialog';
+import { PageDelegate } from '../../page';
 import { RawMouseImpl, RawKeyboardImpl } from './crInput';
 import { getAccessibilityTree } from './crAccessibility';
 import { CRCoverage } from './crCoverage';
 import { CRPDF } from './crPdf';
 import { CRBrowserContext } from './crBrowser';
-import * as types from '../types';
-import { ConsoleMessage } from '../console';
-import * as sourceMap from '../utils/sourceMap';
-import { rewriteErrorMessage } from '../utils/stackTrace';
-import { assert, headersArrayToObject } from '../utils/utils';
+import * as types from '../../types';
+import { ConsoleMessage } from '../../console';
+import * as sourceMap from '../../utils/sourceMap';
+import { rewriteErrorMessage } from '../../utils/stackTrace';
+import { assert, headersArrayToObject } from '../../utils/utils';
 
 
 const UTILITY_WORLD_NAME = '__playwright_utility_world__';
diff --git a/src/chromium/crPdf.ts b/src/server/chromium/crPdf.ts
similarity index 97%
rename from src/chromium/crPdf.ts
rename to src/server/chromium/crPdf.ts
index 4f6d62136f..676b57cc87 100644
--- a/src/chromium/crPdf.ts
+++ b/src/server/chromium/crPdf.ts
@@ -15,8 +15,8 @@
  * limitations under the License.
  */
 
-import { assert } from '../utils/utils';
-import * as types from '../types';
+import { assert } from '../../utils/utils';
+import * as types from '../../types';
 import { CRSession } from './crConnection';
 import { readProtocolStream } from './crProtocolHelper';
 
diff --git a/src/chromium/crProtocolHelper.ts b/src/server/chromium/crProtocolHelper.ts
similarity index 97%
rename from src/chromium/crProtocolHelper.ts
rename to src/server/chromium/crProtocolHelper.ts
index 5e8f31bf37..5245d2f8be 100644
--- a/src/chromium/crProtocolHelper.ts
+++ b/src/server/chromium/crProtocolHelper.ts
@@ -19,8 +19,8 @@ import { CRSession } from './crConnection';
 import { Protocol } from './protocol';
 import * as fs from 'fs';
 import * as util from 'util';
-import * as types from '../types';
-import { mkdirIfNeeded } from '../utils/utils';
+import * as types from '../../types';
+import { mkdirIfNeeded } from '../../utils/utils';
 
 export function getExceptionMessage(exceptionDetails: Protocol.Runtime.ExceptionDetails): string {
   if (exceptionDetails.exception)
diff --git a/src/chromium/protocol.ts b/src/server/chromium/protocol.ts
similarity index 100%
rename from src/chromium/protocol.ts
rename to src/server/chromium/protocol.ts
diff --git a/src/server/electron.ts b/src/server/electron.ts
index d30dee1c34..dab8e212ad 100644
--- a/src/server/electron.ts
+++ b/src/server/electron.ts
@@ -15,9 +15,9 @@
  */
 
 import * as path from 'path';
-import { CRBrowser, CRBrowserContext } from '../chromium/crBrowser';
-import { CRConnection, CRSession } from '../chromium/crConnection';
-import { CRExecutionContext } from '../chromium/crExecutionContext';
+import { CRBrowser, CRBrowserContext } from './chromium/crBrowser';
+import { CRConnection, CRSession } from './chromium/crConnection';
+import { CRExecutionContext } from './chromium/crExecutionContext';
 import * as js from '../javascript';
 import { Page } from '../page';
 import { TimeoutSettings } from '../utils/timeoutSettings';
diff --git a/src/server/playwright.ts b/src/server/playwright.ts
index e5c20c0ce5..b2b52d3bbe 100644
--- a/src/server/playwright.ts
+++ b/src/server/playwright.ts
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { Chromium } from './chromium';
+import { Chromium } from './chromium/chromium';
 import { WebKit } from './webkit';
 import { Firefox } from './firefox';
 import { selectors } from '../selectors';
diff --git a/src/server/validateDependencies.ts b/src/server/validateDependencies.ts
index cfe530dc64..fd46f45817 100644
--- a/src/server/validateDependencies.ts
+++ b/src/server/validateDependencies.ts
@@ -18,7 +18,7 @@ import * as util from 'util';
 import * as path from 'path';
 import * as os from 'os';
 import { spawn } from 'child_process';
-import { getUbuntuVersion } from '../helper';
+import { getUbuntuVersion } from '../utils/ubuntuVersion';
 import { linuxLddDirectories, windowsExeAndDllDirectories, BrowserDescriptor } from '../install/browserPaths.js';
 
 const accessAsync = util.promisify(fs.access.bind(fs));
diff --git a/src/utils/ubuntuVersion.ts b/src/utils/ubuntuVersion.ts
new file mode 100644
index 0000000000..967e912b41
--- /dev/null
+++ b/src/utils/ubuntuVersion.ts
@@ -0,0 +1,61 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ * Modifications copyright (c) Microsoft Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import * as fs from 'fs';
+import * as os from 'os';
+import * as util from 'util';
+
+const readFileAsync = util.promisify(fs.readFile.bind(fs));
+
+export async function getUbuntuVersion(): Promise<string> {
+  if (os.platform() !== 'linux')
+    return '';
+  const osReleaseText = await readFileAsync('/etc/os-release', 'utf8').catch(e => '');
+  if (!osReleaseText)
+    return '';
+  return getUbuntuVersionInternal(osReleaseText);
+}
+
+export function getUbuntuVersionSync(): string {
+  if (os.platform() !== 'linux')
+    return '';
+  try {
+    const osReleaseText = fs.readFileSync('/etc/os-release', 'utf8');
+    if (!osReleaseText)
+      return '';
+    return getUbuntuVersionInternal(osReleaseText);
+  } catch (e) {
+    return '';
+  }
+}
+
+function getUbuntuVersionInternal(osReleaseText: string): string {
+  const fields = new Map();
+  for (const line of osReleaseText.split('\n')) {
+    const tokens = line.split('=');
+    const name = tokens.shift();
+    let value = tokens.join('=').trim();
+    if (value.startsWith('"') && value.endsWith('"'))
+      value = value.substring(1, value.length - 1);
+    if (!name)
+      continue;
+    fields.set(name.toLowerCase(), value);
+  }
+  if (!fields.get('name') || fields.get('name').toLowerCase() !== 'ubuntu')
+    return '';
+  return fields.get('version_id') || '';
+}
diff --git a/utils/check_deps.js b/utils/check_deps.js
index 46c10eb227..b75b2f6547 100644
--- a/utils/check_deps.js
+++ b/utils/check_deps.js
@@ -52,18 +52,20 @@ async function checkDeps() {
   function allowImport(from, to) {
     from = from.substring(from.indexOf('src' + path.sep)).replace(/\\/g, '/');
     to = to.substring(to.indexOf('src' + path.sep)).replace(/\\/g, '/') + '.ts';
+    const toDirectory = to.substring(0, to.lastIndexOf('/') + 1);
     while (from.lastIndexOf('/') !== -1) {
       from = from.substring(0, from.lastIndexOf('/'));
       const allowed = DEPS.get(from + '/');
       if (!allowed)
         continue;
-      for (const prefix of allowed) {
-        if (to.startsWith(prefix))
+      for (const dep of allowed) {
+        if (to === dep || toDirectory === dep )
           return true;
       }
       return false;
     }
-    return false;
+    // Allow everything else for now.
+    return true;
   }
 }
 
@@ -71,8 +73,8 @@ const DEPS = new Map([
   ['src/utils/', ['src/utils/']],
   ['src/common/', ['src/common/']],
   ['src/protocol/', ['src/protocol/', 'src/utils/']],
-  ['src/client/', ['src/client/', 'src/utils/', 'src/protocol/', 'src/chromium/protocol.ts']],
-  ['src/', ['src/']],  // Allow everything else for now.
+  ['src/install/', ['src/install/', 'src/utils/']],
+  ['src/client/', ['src/client/', 'src/utils/', 'src/protocol/', 'src/server/chromium/protocol.ts']],
 ]);
 
 checkDeps();
diff --git a/utils/generate_types/index.js b/utils/generate_types/index.js
index ef7e5c5b82..f6779ce06b 100644
--- a/utils/generate_types/index.js
+++ b/utils/generate_types/index.js
@@ -31,7 +31,7 @@ let documentation;
   const typesDir = path.join(PROJECT_DIR, 'types');
   if (!fs.existsSync(typesDir))
     fs.mkdirSync(typesDir)
-  fs.writeFileSync(path.join(typesDir, 'protocol.d.ts'), fs.readFileSync(path.join(PROJECT_DIR, 'src', 'chromium', 'protocol.ts')), 'utf8');
+  fs.writeFileSync(path.join(typesDir, 'protocol.d.ts'), fs.readFileSync(path.join(PROJECT_DIR, 'src', 'server', 'chromium', 'protocol.ts')), 'utf8');
   const browser = await chromium.launch();
   const page = await browser.newPage();
   const api = await Source.readFile(path.join(PROJECT_DIR, 'docs', 'api.md'));
diff --git a/utils/protocol-types-generator/index.js b/utils/protocol-types-generator/index.js
index 76a5b98d66..a02c8d9d93 100644
--- a/utils/protocol-types-generator/index.js
+++ b/utils/protocol-types-generator/index.js
@@ -15,15 +15,11 @@ async function generateProtocol(name, executablePath) {
 }
 
 async function generateChromiumProtocol(executablePath) {
-  const outputPath = path.join(__dirname, '..', '..', 'src', 'chromium', 'protocol.ts');
+  const outputPath = path.join(__dirname, '..', '..', 'src', 'server', 'chromium', 'protocol.ts');
+  process.env.PLAYWRIGHT_CHROMIUM_DEBUG_PORT = '9339';
   const playwright = require('../../index').chromium;
-  const defaultArgs = playwright._defaultArgs.bind(playwright);
-  playwright._defaultArgs = (...args) => {
-    const result = defaultArgs(...args);
-    result.push('--remote-debugging-port=9339');
-    return result;
-  };
   const browser = await playwright.launch({ executablePath });
+  delete process.env.PLAYWRIGHT_CHROMIUM_DEBUG_PORT;
   const page = await browser.newPage();
   await page.goto(`http://localhost:9339/json/protocol`);
   const json = JSON.parse(await page.evaluate(() => document.documentElement.innerText));