Remove OS(WINCE) from (Render|Scrollbar)ThemeWin.cpp
https://bugs.webkit.org/show_bug.cgi?id=115348

Reviewed by Andreas Kling.

Compile DIBPixelData.cpp on Windows CE too, which allows us
to get rid of a few #if OS(WINCE) in other code parts.

* PlatformWinCE.cmake:
* platform/graphics/win/DIBPixelData.cpp:
(WebCore::DIBPixelData::setRGBABitmapAlpha):
* platform/win/ScrollbarThemeWin.cpp:
(WebCore::ScrollbarThemeWin::paintTrackPiece):
(WebCore::ScrollbarThemeWin::paintButton):
(WebCore::ScrollbarThemeWin::paintThumb):
* rendering/RenderThemeWin.cpp:
(WebCore::drawControl):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149284 268f45cc-cd09-0410-ab3c-d52691b4dbfc