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

content/browser/web_contents/web_contents_view_win.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 CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_WIN_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_WIN_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer.h"
@@ skipping 25 matching lines @@
   virtual ~WebContentsViewWin();
 
   BEGIN_MSG_MAP_EX(WebContentsViewWin)
     MESSAGE_HANDLER(WM_CREATE, OnCreate)
     MESSAGE_HANDLER(WM_DESTROY, OnDestroy)
     MESSAGE_HANDLER(WM_WINDOWPOSCHANGED, OnWindowPosChanged)
     MESSAGE_HANDLER(WM_LBUTTONDOWN, OnMouseDown)
     MESSAGE_HANDLER(WM_MBUTTONDOWN, OnMouseDown)
     MESSAGE_HANDLER(WM_RBUTTONDOWN, OnMouseDown)
     MESSAGE_HANDLER(WM_MOUSEMOVE, OnMouseMove)
-    MESSAGE_HANDLER(base::win::kReflectedMessage, OnReflectedMessage)
     // Hacks for old ThinkPad touchpads/scroll points.
     MESSAGE_HANDLER(WM_NCCALCSIZE, OnNCCalcSize)
     MESSAGE_HANDLER(WM_NCHITTEST, OnNCHitTest)
     MESSAGE_HANDLER(WM_HSCROLL, OnScroll)
     MESSAGE_HANDLER(WM_VSCROLL, OnScroll)
     MESSAGE_HANDLER(WM_SIZE, OnSize)
   END_MSG_MAP()
 
   // Overridden from WebContentsView:
   virtual void CreateView(
@@ skipping 82 matching lines @@
   scoped_refptr<WebContentsDragWin> drag_handler_;
 
   scoped_ptr<ui::HWNDMessageFilter> hwnd_message_filter_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsViewWin);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_WIN_H_