Move more methods from NWW to HWNDMessageHandler.

ui/views/widget/native_widget_aura.cc

Index: ui/views/widget/native_widget_aura.cc
===================================================================
--- ui/views/widget/native_widget_aura.cc	(revision 152769)
+++ ui/views/widget/native_widget_aura.cc	(working copy)
@@ -339,11 +339,13 @@
   aura::RootWindow* root_window = window_->GetRootWindow();
   ui::InputMethod* host =
       root_window->GetProperty(aura::client::kRootWindowInputMethodKey);
-  InputMethod* input_method = new InputMethodBridge(this, host);
-  input_method->Init(GetWidget());
-  return input_method;
+  return new InputMethodBridge(this, host);
 }
 
+internal::InputMethodDelegate* NativeWidgetAura::GetInputMethodDelegate() {
+  return this;
+}
+
 void NativeWidgetAura::CenterWindow(const gfx::Size& size) {
   gfx::Rect parent_bounds(window_->parent()->GetBoundsInRootWindow());
   // When centering window, we take the intersection of the host and