gpu: Remove Create/DeleteImage IPC by adding an X11_PIXMAP_BUFFER GpuMemoryBuffer type.

content/common/gpu/gpu_channel.h

Index: content/common/gpu/gpu_channel.h
diff --git a/content/common/gpu/gpu_channel.h b/content/common/gpu/gpu_channel.h
index dc5f5848659d5bc8d32036dfd16e78ca25059538..d115b720374a5dc9d1ba244d1a6bbe4eb0d810df 100644
--- a/content/common/gpu/gpu_channel.h
+++ b/content/common/gpu/gpu_channel.h
@@ -34,9 +34,6 @@ class WaitableEvent;
 
 namespace gpu {
 class PreemptionFlag;
-namespace gles2 {
-class ImageManager;
-}
 }
 
 namespace IPC {
@@ -115,12 +112,6 @@ class GpuChannel : public IPC::Listener, public IPC::Sender {
       const GPUCreateCommandBufferConfig& init_params,
       int32 route_id);
 
-  void CreateImage(
-      gfx::PluginWindowHandle window,
-      int32 image_id,
-      gfx::Size* size);
-  void DeleteImage(int32 image_id);
-
   gfx::GLShareGroup* share_group() const { return share_group_.get(); }
 
   GpuCommandBufferStub* LookupCommandBuffer(int32 route_id);
@@ -209,7 +200,6 @@ class GpuChannel : public IPC::Listener, public IPC::Sender {
   scoped_refptr<gfx::GLShareGroup> share_group_;
 
   scoped_refptr<gpu::gles2::MailboxManager> mailbox_manager_;
-  scoped_refptr<gpu::gles2::ImageManager> image_manager_;
 
   typedef IDMap<GpuCommandBufferStub, IDMapOwnPointer> StubMap;
   StubMap stubs_;