3D Compositing in <browser>, first draft.

content/renderer/browser_plugin/browser_plugin_manager.h

Index: content/renderer/browser_plugin/browser_plugin_manager.h
diff --git a/content/renderer/browser_plugin/browser_plugin_manager.h b/content/renderer/browser_plugin/browser_plugin_manager.h
index d7218bde4fa08f417cdd1a3e519107238b048cd6..d3f3e34e71799e4e90b52d55c1e6d29b8203e967 100644
--- a/content/renderer/browser_plugin/browser_plugin_manager.h
+++ b/content/renderer/browser_plugin/browser_plugin_manager.h
@@ -10,10 +10,11 @@
 #include "content/public/renderer/render_process_observer.h"
 #include "content/renderer/browser_plugin/browser_plugin.h"
 
+struct BrowserPlugin_SwapInfo;
 struct BrowserPluginMsg_UpdateRect_Params;
 
 namespace WebKit {
-class WebPluginParams;
+struct WebPluginParams;
 }
 
 namespace content {
@@ -36,6 +37,8 @@ class BrowserPluginManager
   void RemoveBrowserPlugin(int instance_id);
   BrowserPlugin* GetBrowserPlugin(int instance_id) const;
 
+  void WillInitiatePaint();
+
  private:
   int browser_plugin_counter_;
   IDMap<BrowserPlugin> instances_;
@@ -46,6 +49,7 @@ class BrowserPluginManager
   void OnGuestCrashed(int instance_id);
   void OnUpdateURL(int instance_id, const GURL& url);
   void OnAdvanceFocus(int instance_id, bool reverse);
+  void OnBuffersSwapped(int instance_id, uint64 surface_handle, const BrowserPlugin_SwapInfo& info);
 
   // RenderProcessObserver override. Call on render thread.
   virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;