Navigation transitions: Do not initiate on reloading the page

R=abarth
BUG=405268

Review URL: https://codereview.chromium.org/469813003

git-svn-id: svn://svn.chromium.org/blink/trunk@180603 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Auto-rebaseline for r180596

http://src.chromium.org/viewvc/blink?view=revision&revision=180596

BUG=390587
TBR=wangxianzhu@chromium.org

Review URL: https://codereview.chromium.org/488823002

git-svn-id: svn://svn.chromium.org/blink/trunk@180604 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove unused accelerated compositing settings.

The following are removed from WebSettings (and a couple unused
leftovers from Settings.in also):
setAcceleratedCompositingForFixedPositionEnabled
setAcceleratedCompositingForFixedRootBackgroundEnabled
setAcceleratedCompositingForOverflowScrollEnabled
setCompositedScrollingForFramesEnabled

R=abarth
BUG=365851

Review URL: https://codereview.chromium.org/484893002

git-svn-id: svn://svn.chromium.org/blink/trunk@180605 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Update expectation of terminate-during-sync-operation-websql.html.

Blink r180546 fixed a crash issue. We still see flaky timeout.  See if Making
Slow will resolve the flakiness.

BUG=347902,357427
TBR=oilpan-reviews@chromium.org

Review URL: https://codereview.chromium.org/494463002

git-svn-id: svn://svn.chromium.org/blink/trunk@180606 bbb929c8-8fbe-4397-9dbb-9b2b20218538