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 e181a3e1a8be055f977fe1f64d7392031bf10a5d..c9c4d2c854c2a20dc2b0a633ba44d7ee9f761982 100644
--- a/content/common/gpu/gpu_channel.h
+++ b/content/common/gpu/gpu_channel.h
@@ -113,10 +113,11 @@ 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);
+  bool CreateImage(
+      const gfx::GpuMemoryBufferHandle& handle,
+      const gfx::Size& size,
+      unsigned internalformat,
+      int32 image_id);
   void DeleteImage(int32 image_id);
 
   gfx::GLShareGroup* share_group() const { return share_group_.get(); }