[BlackBerry] Upstream helper classes for skia

[BlackBerry] Upstream helper classes for skia
https://bugs.webkit.org/show_bug.cgi?id=79216

Patch by Robin Cao <robin.cao@torchmobile.com.cn> on 2012-02-24
Reviewed by Antonio Gomes.

Initial upstreaming, no new tests.

* platform/graphics/blackberry/skia/ImageBufferData.h: Added.
(WebCore):
(ImageBufferData):
* platform/graphics/blackberry/skia/PlatformSupport.cpp: Added.
(WebCore):
(WebCore::setFontRenderStyleDefaults):
(WebCore::PlatformSupport::getRenderStyleForStrike):
(WebCore::PlatformSupport::getFontFamilyForCharacters):
* platform/graphics/blackberry/skia/PlatformSupport.h: Added.
(WebCore):
(PlatformSupport):
(FontFamily):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108775 268f45cc-cd09-0410-ab3c-d52691b4dbfc