Move more methods from NWW to HWNDMessageHandler.

ui/views/widget/native_widget_aura.h

Index: ui/views/widget/native_widget_aura.h
===================================================================
--- ui/views/widget/native_widget_aura.h	(revision 152769)
+++ ui/views/widget/native_widget_aura.h	(working copy)
@@ -11,6 +11,7 @@
 #include "ui/aura/client/drag_drop_delegate.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/base/events.h"
+#include "ui/views/ime/input_method_delegate.h"
 #include "ui/views/views_export.h"
 #include "ui/views/widget/native_widget_private.h"
 
@@ -28,6 +29,7 @@
 class TooltipManagerAura;
 
 class VIEWS_EXPORT NativeWidgetAura : public internal::NativeWidgetPrivate,
+                                      public internal::InputMethodDelegate,
                                       public aura::WindowDelegate,
                                       public aura::client::ActivationDelegate,
                                       public aura::client::DragDropDelegate {
@@ -66,6 +68,7 @@
   virtual void ReleaseCapture() OVERRIDE;
   virtual bool HasCapture() const OVERRIDE;
   virtual InputMethod* CreateInputMethod() OVERRIDE;
+  virtual internal::InputMethodDelegate* GetInputMethodDelegate() OVERRIDE;
   virtual void CenterWindow(const gfx::Size& size) OVERRIDE;
   virtual void GetWindowPlacement(
       gfx::Rect* bounds,