Add a container window to host the desktop window hierarchy in AURA.

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 108 matching lines @@
   rw_params.host = this;
   root_window_ = new aura::RootWindow(rw_params);
 
   SetWindowTransparency();
   root_window_->Init();
   root_window_->AddChild(content_window_);
 
   desktop_native_widget_aura_->CreateCaptureClient(root_window_);
 
   corewm::FocusController* focus_controller =
-      new corewm::FocusController(new DesktopFocusRules);
+      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);
   aura::client::SetDispatcherClient(root_window_,
                                     dispatcher_client_.get());
 
   cursor_client_.reset(
@@ skipping 719 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