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

content/browser/renderer_host/render_widget_host_view_win.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_win.h"
 
 #include <InputScope.h>
 
 #include <algorithm>
 #include <map>
@@ skipping 1857 matching lines @@
   // messages even if we are not in the foreground. So here we check if
   // we have any owned popup windows in the foreground and dismiss them.
   if (m_hWnd != GetForegroundWindow()) {
     HWND toplevel_hwnd = ::GetAncestor(m_hWnd, GA_ROOT);
     EnumThreadWindows(
         GetCurrentThreadId(),
         DismissOwnedPopups,
         reinterpret_cast<LPARAM>(toplevel_hwnd));
   }
 
-  // This is a bit of a hack, but will work for now since we don't want to
-  // pollute this object with WebContentsImpl-specific functionality...
-  bool handled_by_WebContentsImpl = false;
-  if (!is_fullscreen_ && GetParent()) {
-    // Use a special reflected message to break recursion. If we send
-    // WM_MOUSEWHEEL, the focus manager subclass of web contents will
-    // route it back here.
-    MSG new_message = {0};
-    new_message.hwnd = m_hWnd;
-    new_message.message = message;
-    new_message.wParam = wparam;
-    new_message.lParam = lparam;
-
-    handled_by_WebContentsImpl =
-        !!::SendMessage(GetParent(), base::win::kReflectedMessage, 0,
-                        reinterpret_cast<LPARAM>(&new_message));
-  }
-
-  if (!handled_by_WebContentsImpl && render_widget_host_) {
+  if (render_widget_host_) {
     render_widget_host_->ForwardWheelEvent(
         WebInputEventFactory::mouseWheelEvent(m_hWnd, message, wparam,
                                               lparam));
   }
   handled = TRUE;
   return 0;
 }
 
 WebTouchState::WebTouchState(const RenderWidgetHostViewWin* window)
     : window_(window) { }
@@ skipping 1160 matching lines @@
   return new RenderWidgetHostViewWin(widget);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(
       WebKit::WebScreenInfo* results) {
   GetScreenInfoForWindow(results, 0);
 }
 
 }  // namespace content