Fix compile with Aura/Mac ash_shell and workspace controller

ui/aura/window.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 "ui/aura/window.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/stl_util.h"
@@ skipping 588 matching lines @@
   if (!IsVisible())
     return NULL;
 
   if ((for_event_handling && !HitTest(local_point)) ||
       (!for_event_handling && !ContainsPoint(local_point)))
     return NULL;
 
   if (!return_tightest && delegate_)
     return this;
 
-  for (Windows::const_reverse_iterator it = children_.rbegin();
-       it != children_.rend(); ++it) {
+  for (Windows::const_reverse_iterator it = children_.rbegin(),
+           rend = children_.rend();
+       it != rend; ++it) {
     Window* child = *it;
     if (!child->IsVisible() || (for_event_handling && child->ignore_events_))
       continue;
 
     gfx::Point point_in_child_coords(local_point);
     Window::ConvertPointToWindow(this, child, &point_in_child_coords);
     Window* match = child->GetWindowForPoint(point_in_child_coords,
                                              return_tightest,
                                              for_event_handling);
     if (match)
@@ skipping 42 matching lines @@
                                         parent_->children().end(),
                                         this);
   for (++i; i != parent_->children().end(); ++i) {
     if ((*i)->StopsEventPropagation())
       return true;
   }
   return false;
 }
 
 }  // namespace aura