Add a StaleTestExpectations file.

Move all the platform-specific entries with webkit.org bugs to it.
See the bug for rationale.

BUG=308779
R=adamk@chromium.org

Review URL: https://codereview.chromium.org/27812002

git-svn-id: svn://svn.chromium.org/blink/trunk@160121 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fixed getComputedStyle incorrectly hiding vertical border radius information

getComputedStyle of border-radius shows the vertical radius components
if they differ from their horizontal counterpants.
We were incorrectly detecting this case and over simplifying the results
of getComputedStyle. This patch ensures we only hide the vertical values
if they are identical to the horizontal values.

Spec: http://dev.w3.org/csswg/css-backgrounds/#border-radius

BUG=308388

Review URL: https://codereview.chromium.org/27669002

git-svn-id: svn://svn.chromium.org/blink/trunk@160122 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Gardening: Many of focus-by-mouse tests are not flaky now.

BUG=254332
TBR=keishi@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/34233002

git-svn-id: svn://svn.chromium.org/blink/trunk@160124 bbb929c8-8fbe-4397-9dbb-9b2b20218538