https://bugs.webkit.org/show_bug.cgi?id=114814

Patch by Jonathan Feldstein <jfeldstein@blackberry.com> on 2013-04-18
Reviewed by Yong Li, Rob Buis
Internally reviewed by Maxim Mogilnitsky

MaxDrawBuffers, OES_standard_derivatives, OES_EGL_image_external and ARB_texture_rectangle
are initialized through the ShBuiltInResources function so these fields do not need to be
set again in GraphicsContext3DBlackBerry.cpp. In addition, the extension flags should not
be set to true without getExtension being called (Khronos WebGL specs, section 5.14.14.).
In fact, as a direct result of these extensions being enabled prior to calling
getExtension, a WebGL conformance suite test for GL_OES_standard_derivatives was failing.

* platform/graphics/blackberry/GraphicsContext3DBlackBerry.cpp:
(WebCore::GraphicsContext3D::GraphicsContext3D):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148680 268f45cc-cd09-0410-ab3c-d52691b4dbfc