[GPU] Get GPU process running on the mac...

webkit/glue/plugins/webplugin_delegate_impl.h

Index: webkit/glue/plugins/webplugin_delegate_impl.h
===================================================================
--- webkit/glue/plugins/webplugin_delegate_impl.h	(revision 37920)
+++ webkit/glue/plugins/webplugin_delegate_impl.h	(working copy)
@@ -147,10 +147,16 @@
 #endif
 #endif  // OS_MACOSX
 
-#if !defined(OS_MACOSX)
   gfx::PluginWindowHandle windowed_handle() const {
     return windowed_handle_;
   }
+
+#if defined(OS_MACOSX)
+  // On Mac OS X and for the GPU plugin only, this handle is a fake
+  // one and comes in from the outside world.
+  void set_windowed_handle(gfx::PluginWindowHandle handle) {
+    windowed_handle_ = handle;
+  }
 #endif
 
  private:
@@ -225,11 +231,15 @@
   // Closes down and destroys our plugin instance.
   void DestroyInstance();
 
-#if !defined(OS_MACOSX)
+
   // used for windowed plugins
+  // Note: on Mac OS X, the only time the windowed handle is non-zero
+  // is the case of the GPU plugin, which uses a fake window handle to
+  // identify itself back to the browser. It still performs all of its
+  // work offscreen.
   gfx::PluginWindowHandle windowed_handle_;
   gfx::Rect windowed_last_pos_;
-#endif
+
   bool windowed_did_set_window_;
 
   // TODO(dglazkov): No longer used by Windows, make sure the removal