Revert "Revert of Move all RefPtr's to CSSValue to oilpan transition types, except for the one in CSSCursorImageValue. (https://codereview.chromium.org/184313004/)"

This reverts commit 126d3f1d4ded9aa8809692904f9840521422474a.

Land this again with the fix for the build breakage.

R=ager@chromium.org, erik.corry@gmail.com, haraken@chromium.org, oilpan-reviews@chromium.org, tkent@chromium.org, vegorov@chromium.org, zerny@chromium.org
BUG=341815

Review URL: https://codereview.chromium.org/176843020

git-svn-id: svn://svn.chromium.org/blink/trunk@168648 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: render warning decorations on the timeline flame chart.

R=alph@chromium.org

Review URL: https://codereview.chromium.org/188703003

git-svn-id: svn://svn.chromium.org/blink/trunk@168649 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Auto-rebaseline for r168634

http://src.chromium.org/viewvc/blink?view=revision&revision=168634

BUG=114658
TBR=dongseong.hwang@intel.com

Review URL: https://codereview.chromium.org/188523004

git-svn-id: svn://svn.chromium.org/blink/trunk@168650 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Introduce interface for heap snapshot grid node children provider

BUG=342303
R=alph@chromium.org, apavlov@chromium.org

Review URL: https://codereview.chromium.org/176973008

git-svn-id: svn://svn.chromium.org/blink/trunk@168651 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Auto-rebaseline for r168634

http://src.chromium.org/viewvc/blink?view=revision&revision=168634

BUG=114658
TBR=dongseong.hwang@intel.com

Review URL: https://codereview.chromium.org/177013004

git-svn-id: svn://svn.chromium.org/blink/trunk@168652 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Auto-rebaseline for r168632

http://src.chromium.org/viewvc/blink?view=revision&revision=168632

BUG=122593
TBR=srinivasa.ragavan.venkateswaran@intel.com

Review URL: https://codereview.chromium.org/185643006

git-svn-id: svn://svn.chromium.org/blink/trunk@168653 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Do not load editor in drawer if corresponding experiment is turned off

BUG=

Review URL: https://codereview.chromium.org/186613003

git-svn-id: svn://svn.chromium.org/blink/trunk@168654 bbb929c8-8fbe-4397-9dbb-9b2b20218538