Make zoom using ctrl+mouse wheel work in win aura. Windows -non-aura had a hack that was a layering…

ui/views/win/hwnd_message_handler.h

 // Copyright (c) 2012 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 UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_
 #define UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_
 
 #include <atlbase.h>
 #include <atlapp.h>
 #include <atlmisc.h>
@@ skipping 217 matching lines @@
   void RedrawLayeredWindowContents();
 
 
   // Message Handlers ----------------------------------------------------------
 
   BEGIN_MSG_MAP_EX(HWNDMessageHandler)
     // Range handlers must go first!
     MESSAGE_RANGE_HANDLER_EX(WM_MOUSEFIRST, WM_MOUSELAST, OnMouseRange)
     MESSAGE_RANGE_HANDLER_EX(WM_NCMOUSEMOVE, WM_NCXBUTTONDBLCLK, OnMouseRange)
 
-    // Reflected message handler
-    MESSAGE_HANDLER_EX(base::win::kReflectedMessage, OnReflectedMessage)
-
     // CustomFrameWindow hacks
     MESSAGE_HANDLER_EX(WM_NCUAHDRAWCAPTION, OnNCUAHDrawCaption)
     MESSAGE_HANDLER_EX(WM_NCUAHDRAWFRAME, OnNCUAHDrawFrame)
 
     // Vista and newer
     MESSAGE_HANDLER_EX(WM_DWMCOMPOSITIONCHANGED, OnDwmCompositionChanged)
 
     // Non-atlcrack.h handlers
     MESSAGE_HANDLER_EX(WM_GETOBJECT, OnGetObject)
 
@@ skipping 212 matching lines @@
 
   // True the first time nccalc is called on a sizable widget
   bool is_first_nccalc_;
 
   DISALLOW_COPY_AND_ASSIGN(HWNDMessageHandler);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_