Allows menu host windows to be enumerated in DragTargetWindowFinder

ui/views/widget/desktop_aura/desktop_native_widget_aura.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/views/widget/desktop_aura/desktop_native_widget_aura.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/cursor_client.h"
@@ skipping 573 matching lines @@
 
 ui::Layer* DesktopNativeWidgetAura::GetLayer() {
   return content_window_ ? content_window_->layer() : NULL;
 }
 
 void DesktopNativeWidgetAura::ReorderNativeViews() {
   window_reorderer_->ReorderChildWindows();
 }
 
 void DesktopNativeWidgetAura::ViewRemoved(View* view) {
+  DCHECK(drop_helper_.get() != NULL);
+  drop_helper_->ResetTargetViewIfEquals(view);

[sadrul, 2014/03/26 18:01:07]

Can this have a test?

[varkha, 2014/03/27 04:48:13]

Moved to https://codereview.chromium.org/214083004/.

 }
 
 void DesktopNativeWidgetAura::SetNativeWindowProperty(const char* name,
                                                       void* value) {
   if (content_window_)
     content_window_->SetNativeWindowProperty(name, value);
 }
 
 void* DesktopNativeWidgetAura::GetNativeWindowProperty(const char* name) const {
   return content_window_ ?
@@ skipping 589 matching lines @@
   if (cursor_reference_count_ == 0) {
     // We are the last DesktopNativeWidgetAura instance, and we are responsible
     // for cleaning up |cursor_manager_|.
     delete cursor_manager_;
     native_cursor_manager_ = NULL;
     cursor_manager_ = NULL;
   }
 }
 
 }  // namespace views