3D Compositing in <browser>, first draft.

content/browser/browser_plugin/browser_plugin_host_helper.h

Index: content/browser/browser_plugin/browser_plugin_host_helper.h
diff --git a/content/browser/browser_plugin/browser_plugin_host_helper.h b/content/browser/browser_plugin/browser_plugin_host_helper.h
index c7d74f2036613d924eed49ae62d5d213d3ea273c..1b14961a8fab7a435dc774458201cd3b16a01ed5 100644
--- a/content/browser/browser_plugin/browser_plugin_host_helper.h
+++ b/content/browser/browser_plugin/browser_plugin_host_helper.h
@@ -8,6 +8,7 @@
 #include <string>
 
 #include "base/compiler_specific.h"
+#include "content/common/browser_plugin_info.h"
 #include "content/public/browser/render_view_host_observer.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_sync_message.h"
@@ -19,6 +20,7 @@ namespace gfx {
 class Size;
 }
 
+struct BrowserPlugin_SwapInfo;
 struct BrowserPluginHostMsg_ResizeGuest_Params;
 struct ViewHostMsg_UpdateRect_Params;
 
@@ -34,16 +36,19 @@ class BrowserPluginHost;
 class BrowserPluginHostHelper : public RenderViewHostObserver {
  public:
   BrowserPluginHostHelper(BrowserPluginHost* browser_plugin_host,
-                          RenderViewHost* render_view_host);
+                          RenderViewHost* render_view_host,
+                          const BrowserPluginHostMsg_Surface_Params& params);
   virtual ~BrowserPluginHostHelper();
 
   // Make it public for sync IPCs.
   virtual bool Send(IPC::Message* message) OVERRIDE;
  private:
   void OnNavigateGuest(int instance_id,
-                                   long long frame_id,
-                                   const std::string& src,
-                                   const gfx::Size& size);
+                       long long frame_id,
+                       const std::string& src,
+                       const gfx::Size& size,
+                       const BrowserPluginHostMsg_Surface_Params& params);
+  void OnSwapBuffersACK(const BrowserPlugin_SwapInfo& info, uint32 sync_point);
   void OnResizeGuest(int instance_id,
                      const BrowserPluginHostMsg_ResizeGuest_Params& params);
   void OnUpdateRectACK(int instance_id,
@@ -66,6 +71,10 @@ class BrowserPluginHostHelper : public RenderViewHostObserver {
 
   BrowserPluginHost* browser_plugin_host_;
 
+  BrowserPluginHostMsg_Surface_Params surface_params_;
+
+  friend class BrowserPluginCompositingDelegate;
+
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginHostHelper);
 };