Drive-by: fix electron issues, exposed by the test using
waitForNavigation.
Drive-by: mark some tests skip(CHANNEL) that were mistakenly
marked skip(USES_HOOKS).
This also changes timeout error format to
"page.click: Timeout 5000ms exceeded", so that all errors
can be similarly prefixed with api name.
We can now have different api names in different clients,
and our protocol is more reasonable.
Since we are recommending Promise.all pattern anyway, this special
logic just adds to the possibility of timeout if something goes wrong.
For example, Firefox sometimes send Page.willOpenNewWindowAsynchronously
later than the new target arrives and input action just hangs.
We do not guarantee that click resolves before load event comes.
Theoretically, inserting two tasks before resolving load should help,
but seems like a strange contract.
Drive-by: move auto waiting tests to a separate file.
