Consolidate message observer API for win and aura (and touch).

views/widget/native_widget_win.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef VIEWS_WIDGET_NATIVE_WIDGET_WIN_H_
 #define VIEWS_WIDGET_NATIVE_WIDGET_WIN_H_
 #pragma once
 
 #include <atlbase.h>
 #include <atlapp.h>
@@ skipping 261 matching lines @@
   // Information saved before going into fullscreen mode, used to restore the
   // window afterwards.
   struct SavedWindowInfo {
     bool maximized;
     LONG style;
     LONG ex_style;
     RECT window_rect;
   };
 
   // Overridden from MessageLoop::Observer:
-  void WillProcessMessage(const MSG& msg) OVERRIDE;
-  virtual void DidProcessMessage(const MSG& msg) OVERRIDE;
+  virtual base::EventStatus WillProcessEvent(
+      const base::NativeEvent& event) OVERRIDE;
+  virtual void DidProcessEvent(const base::NativeEvent& event) OVERRIDE;
 
   // Overridden from WindowImpl:
   virtual HICON GetDefaultWindowIcon() const OVERRIDE;
   virtual LRESULT OnWndProc(UINT message,
                             WPARAM w_param,
                             LPARAM l_param) OVERRIDE;
 
   // Message Handlers ----------------------------------------------------------
 
   BEGIN_MSG_MAP_EX(NativeWidgetWin)
@@ skipping 369 matching lines @@
   // rather than asking the Widget for the non_client_view so that we know at
   // Init time, before the Widget has created the NonClientView.
   bool has_non_client_view_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeWidgetWin);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_WIDGET_NATIVE_WIDGET_WIN_H_