gpu: Add support for GLX_EXT_texture_from_pixmap extension.

content/browser/gpu/gpu_process_host.h

Index: content/browser/gpu/gpu_process_host.h
diff --git a/content/browser/gpu/gpu_process_host.h b/content/browser/gpu/gpu_process_host.h
index f4b834107a1b65618d6f355f39f96ca7599551a2..03385bd867105af6be00df2793597f05658f13a1 100644
--- a/content/browser/gpu/gpu_process_host.h
+++ b/content/browser/gpu/gpu_process_host.h
@@ -20,6 +20,7 @@
 #include "content/public/common/gpu_info.h"
 #include "ipc/ipc_sender.h"
 #include "ui/gfx/native_widget_types.h"
+#include "ui/gfx/size.h"
 
 class GpuMainThread;
 struct GPUCreateCommandBufferConfig;
@@ -49,6 +50,8 @@ class GpuProcessHost : public content::BrowserChildProcessHostDelegate,
 
   typedef base::Callback<void(int32)> CreateCommandBufferCallback;
 
+  typedef base::Callback<void(const gfx::Size)> CreateImageCallback;
+
   static bool gpu_enabled() { return gpu_enabled_; }
 
   // Creates a new GpuProcessHost or gets an existing one, resulting in the
@@ -90,6 +93,16 @@ class GpuProcessHost : public content::BrowserChildProcessHostDelegate,
       const GPUCreateCommandBufferConfig& init_params,
       const CreateCommandBufferCallback& callback);
 
+  // Tells the GPU process to create a new image using the given window.
+  void CreateImage(
+      gfx::PluginWindowHandle window,
+      int client_id,
+      int image_id,
+      const CreateImageCallback& callback);
+
+    // Tells the GPU process to delete image.
+  void DeleteImage(int client_id, int image_id);
+
   // Whether this GPU process is set up to use software rendering.
   bool software_rendering();
 
@@ -120,6 +133,7 @@ class GpuProcessHost : public content::BrowserChildProcessHostDelegate,
   void OnChannelEstablished(const IPC::ChannelHandle& channel_handle);
   void OnCommandBufferCreated(const int32 route_id);
   void OnDestroyCommandBuffer(int32 surface_id);
+  void OnImageCreated(const gfx::Size size);
 
 #if defined(OS_MACOSX)
   void OnAcceleratedSurfaceBuffersSwapped(
@@ -146,6 +160,8 @@ class GpuProcessHost : public content::BrowserChildProcessHostDelegate,
       const content::GPUInfo& gpu_info);
   void CreateCommandBufferError(const CreateCommandBufferCallback& callback,
                                 int32 route_id);
+  void CreateImageError(const CreateImageCallback& callback,
+                        const gfx::Size size);
 
   // The serial number of the GpuProcessHost / GpuProcessHostUIShim pair.
   int host_id_;
@@ -157,6 +173,9 @@ class GpuProcessHost : public content::BrowserChildProcessHostDelegate,
   // The pending create command buffer requests we need to reply to.
   std::queue<CreateCommandBufferCallback> create_command_buffer_requests_;
 
+  // The pending create image requests we need to reply to.
+  std::queue<CreateImageCallback> create_image_requests_;
+
 #if defined(TOOLKIT_GTK)
   // Encapsulates surfaces that we lock when creating view command buffers.
   // We release this lock once the command buffer (or associated GPU process)