Ensure that in Desktop AURA the WindowModalityController class is at the head of the event pre targ…

ui/views/widget/desktop_aura/desktop_root_window_host_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 "ui/views/widget/desktop_aura/desktop_root_window_host_win.h"
 
 #include "base/win/metro.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/aura_constants.h"
@@ skipping 105 matching lines @@
   message_handler_->Init(parent_hwnd, pixel_bounds);
 
   aura::RootWindow::CreateParams rw_params(params.bounds);
   rw_params.host = this;
   root_window_ = new aura::RootWindow(rw_params);
 
   SetWindowTransparency();
   root_window_->Init();
   root_window_->AddChild(content_window_);
 
+  desktop_native_widget_aura_->InstallWindowModalityController(root_window_);
   desktop_native_widget_aura_->CreateCaptureClient(root_window_);
 
   corewm::FocusController* focus_controller =
       new corewm::FocusController(new DesktopFocusRules(content_window));
   focus_client_.reset(focus_controller);
   aura::client::SetFocusClient(root_window_, focus_controller);
   aura::client::SetActivationClient(root_window_, focus_controller);
   root_window_->AddPreTargetHandler(focus_controller);
 
   dispatcher_client_.reset(new DesktopDispatcherClient);
@@ skipping 720 matching lines @@
 DesktopRootWindowHost* DesktopRootWindowHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura,
     const gfx::Rect& initial_bounds) {
   return new DesktopRootWindowHostWin(native_widget_delegate,
                                       desktop_native_widget_aura,
                                       initial_bounds);
 }
 
 }  // namespace views