Mark http/tests/workers/terminate-during-sync-operation.html as flaky.

BUG=339539
TBR=ager@chromium.org

Review URL: https://codereview.chromium.org/150613002

git-svn-id: svn://svn.chromium.org/blink/trunk@166142 bbb929c8-8fbe-4397-9dbb-9b2b20218538
In the latest WD, grid-definition-{columns|rows} were renamed to grid-template-{columns|rows}.

BUG=337626

Review URL: https://codereview.chromium.org/146773002

git-svn-id: svn://svn.chromium.org/blink/trunk@166143 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Add 'Allocation profiler' experiment

A new experimental setting is added. When it is enabled "Record object allocation" button will start recording call stacks of JS heap allocation which can later be shown in 'Allocations' view of the heap snapshot.

BUG=277984

Review URL: https://codereview.chromium.org/150293002

git-svn-id: svn://svn.chromium.org/blink/trunk@166144 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: don't animate debugger sidebar while stepping.

TBR=dgozman

Review URL: https://codereview.chromium.org/137263018

git-svn-id: svn://svn.chromium.org/blink/trunk@166145 bbb929c8-8fbe-4397-9dbb-9b2b20218538