https://bugs.webkit.org/show_bug.cgi?id=119562

Reviewed by Brent Fulgham.

* WebCore.vcxproj/WebCore.vcxproj:
Build GLContext.cpp and GraphicsContext3DPrivate.cpp on AppleWin port.
* WebCore.vcxproj/WebCore.vcxproj.filters:
Moved GLContext and GraphicsContext3DPrivate from Cairo filter to graphics.
* platform/graphics/GraphicsContext3D.h:
Added m_webGLLayer for AppleWin port.
* platform/graphics/GraphicsContext3DPrivate.cpp:
Protected inclusion of PlatformContextCairo.h in USE(CAIRO) macro for non-cairo ports.
* platform/graphics/win/GraphicsContext3DWin.cpp:
Removed stub GraphicsContext3DPrivate implementation in favor of GraphicsContext3DPrivate.cpp.
(WebCore::GraphicsContext3D::GraphicsContext3D):
Added GraphicsContext3DPrivate and PlatformCALayer initialization.
(WebCore::GraphicsContext3D::makeContextCurrent):
(WebCore::GraphicsContext3D::platformGraphicsContext3D):
Added implementation based on Cairo ports' to be refactored soon.
(WebCore::GraphicsContext3D::platformLayer):
Return PlatformCALayer's PlatformLayer instead of 0.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153843 268f45cc-cd09-0410-ab3c-d52691b4dbfc