Rebaseline non-CORS error message on WinXP.

This fixes a WinXP bot failure after https://codereview.chromium.org/332633006.
This case was presumably missed because WinXP is not in the CQ bot set.

TBR=sigbjornf@opera.com
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/355313002

git-svn-id: svn://svn.chromium.org/blink/trunk@177166 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove CSS Exclusions leftovers

https://codereview.chromium.org/60013004 started this but must have missed these.

Review URL: https://codereview.chromium.org/359023002

git-svn-id: svn://svn.chromium.org/blink/trunk@177167 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Make TextTrackCue's readonly attribute TextTrack? track nullable

http://whatwg.org/html#texttrackcue

TEST=LayoutTests/media/track/opera/interfaces/TextTrackCue/track.html

Review URL: https://codereview.chromium.org/356903006

git-svn-id: svn://svn.chromium.org/blink/trunk@177168 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Re-enable screen_orientation/ tests following mock fixes.

The screen orientation mock was broken and some LayoutTests had to be
disabled. Now that https://codereview.chromium.org/339913002 has landed,
we the disabled tests should be working again.

BUG=389047,388748

Review URL: https://codereview.chromium.org/360493003

git-svn-id: svn://svn.chromium.org/blink/trunk@177169 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Debugger StepInto/Out/Over initiated from a framework should not black-box it.

BUG=267592
R=yurys, pfeldman@chromium.org

Review URL: https://codereview.chromium.org/342713002

git-svn-id: svn://svn.chromium.org/blink/trunk@177170 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Support media event listener breakpoints in frontend.

This will allow to set breakpoint on media event listeners for video and audio elements.

R=yurys, vsevik

Review URL: https://codereview.chromium.org/343653007

git-svn-id: svn://svn.chromium.org/blink/trunk@177171 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Start a top-down rewrite of Garden-O-Matic in Polymer

In previous CLs, we've been working up from the bottom of the widget hierarchy
to rewrite Garden-O-Matic in Polymer. This CL moves this project forward by
starting from the top of the widget hierarchy. When these two efforts meet in
the middle, we'll be done!

This CL is mostly about fleshing out the structure of the components. We'll
need to iterate on the visual style of each component in future CLs. I've added
dependencies on Polymer's core and paper elements because the core elements are
super useful and the paper elements are super pretty.

The top-down version is hosted in gom2.html to avoid breaking the working
product. Currently, gom2 shows correctly grouped sets of failing tests and the
regression ranges for each group (albeit without any fancy styling).

NOTRY=true

Review URL: https://codereview.chromium.org/345853005

git-svn-id: svn://svn.chromium.org/blink/trunk@177172 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Account for scroll when positioning the flakiness dashboard popup

This patch updates the popup on the flakiness dashboard to be under
the cursor even if the page is scrolled.

TEST=manual, verified the popup works when scrolled in both Chrome and Firefox.

Review URL: https://codereview.chromium.org/356783003

git-svn-id: svn://svn.chromium.org/blink/trunk@177173 bbb929c8-8fbe-4397-9dbb-9b2b20218538