Remove OS(WINCE) from AccessibilityObject.h
https://bugs.webkit.org/show_bug.cgi?id=115192

Reviewed by Andreas Kling.

Use the same files like the the other PLATFORM(WIN) ports use.

Source/WebCore:

* PlatformWinCE.cmake:
* accessibility/AccessibilityObject.h:
(AccessibilityObject):

Source/WebKit:

* PlatformWinCE.cmake:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149139 268f45cc-cd09-0410-ab3c-d52691b4dbfc