Push API: set mock behavior from layout tests and exercise the success path.

BUG=350377

Review URL: https://codereview.chromium.org/367063002

git-svn-id: svn://svn.chromium.org/blink/trunk@177482 bbb929c8-8fbe-4397-9dbb-9b2b20218538
context.addHitRegion() is not working when using transform operation.

Should be able to add hit region when using transform operation.
context.isClipMode uses SkClipStack::getSaveCount() internally.
But the count is incremented by transform operation as well as clip operation.
So, remove the method and then add a new method which is determined by only clip operation.

BUG=389862

Review URL: https://codereview.chromium.org/352793006

git-svn-id: svn://svn.chromium.org/blink/trunk@177483 bbb929c8-8fbe-4397-9dbb-9b2b20218538
gardening: mark access-control-basic-get-fail-non-simple.html as flaky

BUG=391299
TBR=pilgrim@chromium.org

Review URL: https://codereview.chromium.org/361403005

git-svn-id: svn://svn.chromium.org/blink/trunk@177484 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: [Timeline] do not collect "devtools" category because we do not use it any more.

BUG=361045

Review URL: https://codereview.chromium.org/365103002

git-svn-id: svn://svn.chromium.org/blink/trunk@177485 bbb929c8-8fbe-4397-9dbb-9b2b20218538