linux_aura: Make combo boxes work with DesktopRootWindowHostLinux.

ui/views/widget/desktop_root_window_host_linux.h

Index: ui/views/widget/desktop_root_window_host_linux.h
diff --git a/ui/views/widget/desktop_root_window_host_linux.h b/ui/views/widget/desktop_root_window_host_linux.h
index 32acfd1f14b34695e86954f2196ccfe8fdc3523a..cbf65620a0e24da491334e0b8120be9cbe0c253e 100644
--- a/ui/views/widget/desktop_root_window_host_linux.h
+++ b/ui/views/widget/desktop_root_window_host_linux.h
@@ -34,13 +34,15 @@ class DesktopRootWindowHostLinux : public DesktopRootWindowHost,
                                    public aura::RootWindowHost,
                                    public MessageLoop::Dispatcher {
  public:
-  DesktopRootWindowHostLinux();
+  DesktopRootWindowHostLinux(
+      internal::NativeWidgetDelegate* native_widget_delegate,
+      const gfx::Rect& initial_bounds);
   virtual ~DesktopRootWindowHostLinux();
 
  private:
   // Initializes our X11 surface to draw on. This method performs all
   // initialization related to talking to the X11 server.
-  void InitX11Window(const gfx::Rect& bounds);
+  void InitX11Window(const Widget::InitParams& params);
 
   // Creates an aura::RootWindow to contain the |content_window|, along with
   // all aura client objects that direct behavior.
@@ -145,6 +147,10 @@ class DesktopRootWindowHostLinux : public DesktopRootWindowHost,
   scoped_ptr<aura::shared::InputMethodEventFilter> input_method_filter_;
   scoped_ptr<X11WindowEventFilter> x11_window_event_filter_;
 
+  // TODO(beng): Consider providing an interface to DesktopNativeWidgetAura
+  //             instead of providing this route back to Widget.
+  internal::NativeWidgetDelegate* native_widget_delegate_;
+
   aura::RootWindowHostDelegate* root_window_host_delegate_;
   aura::Window* content_window_;