content: Always allocate GpuMemoryBuffers on UI thread.

content/browser/renderer_host/render_message_filter.h

Index: content/browser/renderer_host/render_message_filter.h
diff --git a/content/browser/renderer_host/render_message_filter.h b/content/browser/renderer_host/render_message_filter.h
index 3682526de7d92475886eb1afefa81e19ba713e6b..18f6a2d0d2ee47757446b58e2977b333b1571dab 100644
--- a/content/browser/renderer_host/render_message_filter.h
+++ b/content/browser/renderer_host/render_message_filter.h
@@ -32,7 +32,6 @@
 #include "ui/surface/transport_dib.h"
 
 #if defined(OS_MACOSX)
-#include "base/mac/scoped_cftyperef.h"
 #include "content/common/mac/font_loader.h"
 #endif
 
@@ -53,11 +52,6 @@ class SharedMemory;
 class TaskRunner;
 }
 
-namespace gfx {
-class Rect;
-struct GpuMemoryBufferHandle;
-}
-
 namespace media {
 class AudioManager;
 struct MediaLogEvent;
@@ -273,14 +267,6 @@ class RenderMessageFilter : public BrowserMessageFilter {
                             uint32_t data_size);
 #endif
 
-  void OnAllocateGpuMemoryBuffer(uint32 width,
-                                 uint32 height,
-                                 uint32 internalformat,
-                                 uint32 usage,
-                                 IPC::Message* reply);
-  void GpuMemoryBufferAllocated(IPC::Message* reply,
-                                const gfx::GpuMemoryBufferHandle& handle);
-
   // Cached resource request dispatcher host and plugin service, guaranteed to
   // be non-null if Init succeeds. We do not own the objects, they are managed
   // by the BrowserProcess, which has a wider scope than we do.
@@ -319,10 +305,6 @@ class RenderMessageFilter : public BrowserMessageFilter {
   media::AudioManager* audio_manager_;
   MediaInternals* media_internals_;
 
-#if defined(OS_MACOSX)
-  base::ScopedCFTypeRef<CFTypeRef> last_io_surface_;
-#endif
-
   DISALLOW_COPY_AND_ASSIGN(RenderMessageFilter);
 };