Add temporary typedef to ANGLEWebKitBridge to support incompatible API upgrade
https://bugs.webkit.org/show_bug.cgi?id=109127

Reviewed by Dean Jackson.

No new tests. Built and tested WebKit and Chromium with this change.

* platform/graphics/ANGLEWebKitBridge.cpp:
(WebCore):
    Define temporary typedef spanning int -> size_t change.
(WebCore::getValidationResultValue):
(WebCore::getSymbolInfo):
    Use temporary typedef.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@142567 268f45cc-cd09-0410-ab3c-d52691b4dbfc