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

cc/render_surface_filters.cc

Index: cc/render_surface_filters.cc
diff --git a/cc/render_surface_filters.cc b/cc/render_surface_filters.cc
index 29c031cf5089319674a448d383e8c2855e9e5dc0..f04fbb984776414dc9f176dd48ad4f449e9e71af 100644
--- a/cc/render_surface_filters.cc
+++ b/cc/render_surface_filters.cc
@@ -8,7 +8,6 @@
 #include "skia/ext/refptr.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperation.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperations.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3D.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/effects/SkBlurImageFilter.h"
 #include "third_party/skia/include/effects/SkColorMatrixFilter.h"
@@ -377,10 +376,9 @@ WebKit::WebFilterOperations RenderSurfaceFilters::optimize(const WebKit::WebFilt
     return newList;
 }
 
-SkBitmap RenderSurfaceFilters::apply(const WebKit::WebFilterOperations& filters, unsigned textureId, const gfx::SizeF& size, WebKit::WebGraphicsContext3D* context3D, GrContext* grContext)
+SkBitmap RenderSurfaceFilters::apply(const WebKit::WebFilterOperations& filters, unsigned textureId, gfx::SizeF size, GrContext* grContext)
 {
-    if (!context3D || !grContext)
-        return SkBitmap();
+    DCHECK(grContext);
 
     WebKit::WebFilterOperations optimizedFilters = optimize(filters);
     FilterBufferState state(grContext, size, textureId);
@@ -448,7 +446,6 @@ SkBitmap RenderSurfaceFilters::apply(const WebKit::WebFilterOperations& filters,
         }
         state.swap();
     }
-    context3D->flush();
     return state.source();
 }