diff --git a/browsers.json b/browsers.json
index c9e4e9e796..2564e264d9 100644
--- a/browsers.json
+++ b/browsers.json
@@ -7,11 +7,11 @@
     },
     {
       "name": "firefox",
-      "revision": "1122"
+      "revision": "1125"
     },
     {
       "name": "webkit",
-      "revision": "1302"
+      "revision": "1304"
     }
   ]
 }
diff --git a/package.json b/package.json
index 3f2e1df99d..2da954a8ba 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,7 @@
     "test-types": "npm run generate-types && npx -p typescript@3.7.5 tsc -p utils/generate_types/test/tsconfig.json && npm run typecheck-tests",
     "generate-types": "node utils/generate_types/",
     "typecheck-tests": "tsc -p ./test/",
+    "roll-browser": "node utils/roll_browser.js",
     "jest": "jest"
   },
   "author": {
diff --git a/src/firefox/protocol.ts b/src/firefox/protocol.ts
index 8ed71a5244..60af6f935d 100644
--- a/src/firefox/protocol.ts
+++ b/src/firefox/protocol.ts
@@ -594,6 +594,15 @@ export module Protocol {
       message: string;
     };
     export type sendMessageToWorkerReturnValue = void;
+    export type startVideoRecordingParameters = {
+      file: string;
+      width: number;
+      height: number;
+      scale?: number;
+    };
+    export type startVideoRecordingReturnValue = void;
+    export type stopVideoRecordingParameters = void;
+    export type stopVideoRecordingReturnValue = void;
   }
   export module Runtime {
     export type RemoteObject = {
@@ -976,6 +985,8 @@ export module Protocol {
     "Page.handleDialog": Page.handleDialogParameters;
     "Page.setInterceptFileChooserDialog": Page.setInterceptFileChooserDialogParameters;
     "Page.sendMessageToWorker": Page.sendMessageToWorkerParameters;
+    "Page.startVideoRecording": Page.startVideoRecordingParameters;
+    "Page.stopVideoRecording": Page.stopVideoRecordingParameters;
     "Runtime.evaluate": Runtime.evaluateParameters;
     "Runtime.callFunction": Runtime.callFunctionParameters;
     "Runtime.disposeObject": Runtime.disposeObjectParameters;
@@ -1044,6 +1055,8 @@ export module Protocol {
     "Page.handleDialog": Page.handleDialogReturnValue;
     "Page.setInterceptFileChooserDialog": Page.setInterceptFileChooserDialogReturnValue;
     "Page.sendMessageToWorker": Page.sendMessageToWorkerReturnValue;
+    "Page.startVideoRecording": Page.startVideoRecordingReturnValue;
+    "Page.stopVideoRecording": Page.stopVideoRecordingReturnValue;
     "Runtime.evaluate": Runtime.evaluateReturnValue;
     "Runtime.callFunction": Runtime.callFunctionReturnValue;
     "Runtime.disposeObject": Runtime.disposeObjectReturnValue;
diff --git a/src/webkit/protocol.ts b/src/webkit/protocol.ts
index e67b434680..ca1befb31c 100644
--- a/src/webkit/protocol.ts
+++ b/src/webkit/protocol.ts
@@ -36,7 +36,7 @@ export module Protocol {
       startDelay?: number;
       endDelay?: number;
       /**
-       * Number of iterations in the animation.
+       * Number of iterations in the animation. <code>Infinity</code> is represented as <code>-1</code>.
        */
       iterationCount?: number;
       /**
@@ -6613,14 +6613,6 @@ Left=1, Right=2, Middle=4, Back=8, Forward=16, None=0.
     }
     export type setOrientationOverrideReturnValue = {
     }
-    /**
-     * Pauses page activity (active objects, animations).
-     */
-    export type setActivityPausedParameters = {
-      paused: boolean;
-    }
-    export type setActivityPausedReturnValue = {
-    }
   }
   
   export module Playwright {
@@ -8663,7 +8655,6 @@ Left=1, Right=2, Middle=4, Back=8, Forward=16, None=0.
     "Page.crash": Page.crashParameters;
     "Page.setScreenSizeOverride": Page.setScreenSizeOverrideParameters;
     "Page.setOrientationOverride": Page.setOrientationOverrideParameters;
-    "Page.setActivityPaused": Page.setActivityPausedParameters;
     "Playwright.enable": Playwright.enableParameters;
     "Playwright.disable": Playwright.disableParameters;
     "Playwright.close": Playwright.closeParameters;
@@ -8947,7 +8938,6 @@ Left=1, Right=2, Middle=4, Back=8, Forward=16, None=0.
     "Page.crash": Page.crashReturnValue;
     "Page.setScreenSizeOverride": Page.setScreenSizeOverrideReturnValue;
     "Page.setOrientationOverride": Page.setOrientationOverrideReturnValue;
-    "Page.setActivityPaused": Page.setActivityPausedReturnValue;
     "Playwright.enable": Playwright.enableReturnValue;
     "Playwright.disable": Playwright.disableReturnValue;
     "Playwright.close": Playwright.closeReturnValue;