Enable Woff 2.0 font compression format by default

Feature Dashboard: http://www.chromestatus.com/features/6718644721549312
PSA: https://groups.google.com/a/chromium.org/d/topic/chromium-dev/j27Ou4RtvQI/discussion

BUG=242809,223731

Review URL: https://codereview.chromium.org/199773002

git-svn-id: svn://svn.chromium.org/blink/trunk@169206 bbb929c8-8fbe-4397-9dbb-9b2b20218538
win: Shard core_html target.

BUG=352495
TBR=jamesr@chromium.org

Review URL: https://codereview.chromium.org/198003009

git-svn-id: svn://svn.chromium.org/blink/trunk@169209 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Testcase for crbug.com/350907

Also replace the FIXME with an attempt at explaining why/when m_image
can be 0.

BUG=350907

Review URL: https://codereview.chromium.org/198943004

git-svn-id: svn://svn.chromium.org/blink/trunk@169210 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Compute the keyTimes index correctly for discrete (values) animations

The last value is allowed to be non-one for discrete mode animations (but
not for linear and spline mode animations).

TEST=svg/animations/animate-elem-{14,18}-t-drt.html
BUG=350318

Review URL: https://codereview.chromium.org/197283002

git-svn-id: svn://svn.chromium.org/blink/trunk@169211 bbb929c8-8fbe-4397-9dbb-9b2b20218538