Remove testRunner.display() from most compositing/ tests

BUG=345027

Review URL: https://codereview.chromium.org/181653006

git-svn-id: svn://svn.chromium.org/blink/trunk@168066 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Add a UseCounter for <a ping> usage.

Chromium and Safari are the only browsers supporting this attribute, and an
imperative version of this functionality is upcoming as the Beacon API.
Mozilla stated they'd prefer to support only one of them, and are erring in
the direction of the Beacon API. Preemptively start getting some data.

NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/183093003

git-svn-id: svn://svn.chromium.org/blink/trunk@168067 bbb929c8-8fbe-4397-9dbb-9b2b20218538
More expectation updates for bug 248938, since it seems to be a neverending
source of bot flakiness.

BUG=248938
TEST=none
TBR=apavlov

Review URL: https://codereview.chromium.org/180723014

git-svn-id: svn://svn.chromium.org/blink/trunk@168068 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Apparently "Failure" is not the right expectation for crashes.

BUG=347365
TEST=none
TBR=eseidel

Review URL: https://codereview.chromium.org/183683004

git-svn-id: svn://svn.chromium.org/blink/trunk@168069 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove animatedPropertyCache from SVGAnimatedProperty, it is not needed anymore because of the new animated property system.

This is the first item on the removal TODO.

Review URL: https://codereview.chromium.org/180243018

git-svn-id: svn://svn.chromium.org/blink/trunk@168070 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Garden-o-matic: Use the real commit title from Atom for commit data if available

R=eseidel

Review URL: https://codereview.chromium.org/182993002

git-svn-id: svn://svn.chromium.org/blink/trunk@168071 bbb929c8-8fbe-4397-9dbb-9b2b20218538