Auto-rebaseline for r172823

http://src.chromium.org/viewvc/blink?view=revision&revision=172823

BUG=366438
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/267503002

git-svn-id: svn://svn.chromium.org/blink/trunk@173001 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove the acceleratedCompositingForPluginsEnabled Setting.

It's no longer set to be anything but true.

Depends on: https://codereview.chromium.org/239973005/

R=abarth@chromium.org, vollick@chromium.org
BUG=365853

Review URL: https://codereview.chromium.org/247673005

git-svn-id: svn://svn.chromium.org/blink/trunk@173002 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Update viewport trigger for GPU rasterization

This updates the viewport trigger for GPU rasterization to
<meta name="viewport" content="width=device-width, minimum-scale=1.0,
  initial-scale=1.0, user-scalable=yes">

BUG=367202

Review URL: https://codereview.chromium.org/268453003

git-svn-id: svn://svn.chromium.org/blink/trunk@173003 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Add a UseCounter for Notification.permission

While this is a relatively new property, it does require a synchronous IPC
to the browser process in order to get the permission status, and thus would
be better as a Notification.hasPermission() method returning a Promise (or
similar).

Since we will need a similar construct for Push Messaging, and potentially
other APIs, let's get some data on whether developers use this to see if
we can get a more common, asynchronous approach.

BUG=

Review URL: https://codereview.chromium.org/254023002

git-svn-id: svn://svn.chromium.org/blink/trunk@173004 bbb929c8-8fbe-4397-9dbb-9b2b20218538