Remove linux-x86 specific test expectation file for imagemap-focus-ring-zero-outline-width.html.

From what I can tell there is no difference between linux and linux-x86 and I also notice that running webkit-patch rebaseline didn't regenerate the linux-x86 file.
Finally there is no .png file for linux-x86 which seems to indicate this is a stale file that is incorrectly picked up when running the test. Hence I am trying to 
remove it to see if the test will start succeeding by picking up the linux version.

BUG=
TBR=eseidel@chromium.org, dglazkov@chromium.org, zhaoze.zhou@partner.samsung.com
NOTRY=true

Review URL: https://codereview.chromium.org/488993002

git-svn-id: svn://svn.chromium.org/blink/trunk@180636 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Oilpan: Remove a bunch of WillBeRefCountedGarbageCollected occurrences.

They used to be needed for EventTargets but that is no longer the case.

Review URL: https://codereview.chromium.org/491783002

git-svn-id: svn://svn.chromium.org/blink/trunk@180637 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: fix raster task event name used in Timeline

We used to convert RasterTask events into Rasterize timeline events but there is no such conversion in tracing based Timeline.

BUG=361045

Review URL: https://codereview.chromium.org/488673002

git-svn-id: svn://svn.chromium.org/blink/trunk@180638 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Oilpan: Add heap regions specialized for non-finalized objects.

This just adds the pages and updates the allocation routines to
use them for non-finalized objects. This is in preparation for
sweeping non-finalized pages in parallel on another thread.

R=oilpan-reviews@chromium.org, zerny@chromium.org

Review URL: https://codereview.chromium.org/469213006

git-svn-id: svn://svn.chromium.org/blink/trunk@180639 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Revert of DevTools: add initial support for console.time/timeEnd in tracing based Timeline (patchset #3 of https://codereview.chromium.org/464063008/)

Reason for revert:
As per comment from nduca. I also don't understand why instrumentation is not reused.

Original issue's description:
> DevTools: add initial support for console.time/timeEnd in tracing based Timeline
> 
> console.time/timeEnd will result in instant trace events. The events will be shown as marker events, i.e. as markers on the Timeline overview.
> 
> BUG=361045
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=180635

TBR=nduca@chromium.org,alph@chromium.org,loislo@chromium.org,yurys@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=361045

Review URL: https://codereview.chromium.org/485893006

git-svn-id: svn://svn.chromium.org/blink/trunk@180640 bbb929c8-8fbe-4397-9dbb-9b2b20218538