Auto-rebaseline for r173452

http://src.chromium.org/viewvc/blink?view=revision&revision=173452

BUG=369609
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/270523004

git-svn-id: svn://svn.chromium.org/blink/trunk@173510 bbb929c8-8fbe-4397-9dbb-9b2b20218538
[Oilpan] Move CSSStyleDeclaration and subclasses to the heap using transistion types.

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/270103004

git-svn-id: svn://svn.chromium.org/blink/trunk@173511 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Add an experiment for using trace events as Timeline backend

This patch adds initial support for creating flame chart timeline view based on devtools trace events. It misses some features compared to the current flame chart mode:
- title formatting matching one in the current Timeline
- warnings marker
- details for selected entry
I'm going to address them one by one in next changes. After that we will build old timeline grid view based on the trace events.

BUG=361045

Review URL: https://codereview.chromium.org/272553002

git-svn-id: svn://svn.chromium.org/blink/trunk@173512 bbb929c8-8fbe-4397-9dbb-9b2b20218538