cc: Route offscreen context creation for compositor to the browser.

cc/resource_provider.cc

Index: cc/resource_provider.cc
diff --git a/cc/resource_provider.cc b/cc/resource_provider.cc
index 67d3adfb05d339b547b6ab831703494ee3326446..fde4783b8edb53be44ee60955bfe50c01cecc2da 100644
--- a/cc/resource_provider.cc
+++ b/cc/resource_provider.cc
@@ -11,6 +11,7 @@
 #include "base/stl_util.h"
 #include "base/string_split.h"
 #include "base/string_util.h"
+#include "cc/ganesh_resource_provider.h"
 #include "cc/gl_renderer.h" // For the GLC() macro.
 #include "cc/platform_color.h"
 #include "cc/texture_uploader.h"
@@ -552,6 +553,7 @@ ResourceProvider::ResourceProvider(OutputSurface* context)
     , m_useShallowFlush(false)
     , m_maxTextureSize(0)
     , m_bestTextureFormat(0)
+    , m_ganeshResourceProvider(GaneshResourceProvider::Create())
 {
 }
 
@@ -1051,5 +1053,8 @@ void ResourceProvider::lazyAllocate(Resource* resource) {
         GLC(context3d, context3d->texImage2D(GL_TEXTURE_2D, 0, format, size.width(), size.height(), 0, format, GL_UNSIGNED_BYTE, 0));
 }
 
+void ResourceProvider::setGaneshContexts(WebKit::WebGraphicsContext3D* context3d, GrContext* grContext) {
+    m_ganeshResourceProvider->set_contexts(context3d, grContext);
+}
 
 }  // namespace cc