fast/dom/shadow/content-element-in-media.html is wrong.
https://bugs.webkit.org/show_bug.cgi?id=81310

Modifying to check() to dump expected and actual text at the same
absolute position, because DumpRenderTree dumps absolute x,y-position
information for a layer which contains RenderVideo. For example,
backgroundClip at (8,163), clip at (8, 163) and so on.

Patch by Takashi Sakamoto <tasak@google.com> on 2012-05-27
Reviewed by Hajime Morita.

* fast/dom/resources/shadow-test-driver.js:
(check):
Disabled actual block when dumping expected block as text, and vice
versa.
* platform/chromium/test_expectations.txt:
Removed BUGWK81310.

git-svn-id: svn://svn.chromium.org/blink/trunk@118633 bbb929c8-8fbe-4397-9dbb-9b2b20218538