Wire GetWindowRect, GetRootWindowRect, and GetScreenInfo out to the UI thread.

chrome/browser/renderer_host/render_widget_host.h

Index: chrome/browser/renderer_host/render_widget_host.h
diff --git a/chrome/browser/renderer_host/render_widget_host.h b/chrome/browser/renderer_host/render_widget_host.h
index cf3f9d5a7c83aaa5176e09f084110a452cbe84b4..d2d28268f4279952b7be97429ca8d41012218110 100644
--- a/chrome/browser/renderer_host/render_widget_host.h
+++ b/chrome/browser/renderer_host/render_widget_host.h
@@ -26,6 +26,7 @@ namespace WebKit {
 class WebInputEvent;
 class WebMouseEvent;
 class WebMouseWheelEvent;
+struct WebScreenInfo;
 }
 
 class BackingStore;
@@ -391,10 +392,15 @@ class RenderWidgetHost : public IPC::Channel::Listener {
   // Using int instead of ViewHostMsg_ImeControl for control's type to avoid
   // having to bring in render_messages.h in a header file.
   void OnMsgImeUpdateStatus(int control, const gfx::Rect& caret_rect);
-  void OnMsgShowPopup(const IPC::Message& message);
 #if defined(OS_LINUX)
   void OnMsgCreatePluginContainer(gfx::PluginWindowHandle *container);
   void OnMsgDestroyPluginContainer(gfx::PluginWindowHandle container);
+#elif defined(OS_MACOSX)
+  void OnMsgShowPopup(const IPC::Message& message);
+  void OnMsgGetScreenInfo(gfx::NativeViewId view,
+                          WebKit::WebScreenInfo* results);
+  void OnMsgGetWindowRect(gfx::NativeViewId window_id, gfx::Rect* results);
+  void OnMsgGetRootWindowRect(gfx::NativeViewId window_id, gfx::Rect* results);
 #endif
 
   // Paints the given bitmap to the current backing store at the given location.