[Ozone] Get aura::Window from host rather than dispatcher in shell_aura.cc

content/shell/browser/shell_aura.cc

 // Copyright 2013 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/shell/browser/shell.h"
 
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
 #include "content/shell/browser/shell_platform_data_aura.h"
 #include "ui/aura/env.h"
@@ skipping 33 matching lines @@
 void Shell::PlatformCreateWindow(int width, int height) {
   CHECK(platform_);
   if (!headless_)
     platform_->ShowWindow();
   platform_->ResizeWindow(gfx::Size(width, height));
 }
 
 void Shell::PlatformSetContents() {
   CHECK(platform_);
   aura::Window* content = web_contents_->GetView()->GetNativeView();
-  aura::Window* parent = platform_->dispatcher()->window();
+  aura::Window* parent = platform_->host()->window();
   if (parent->Contains(content))
     return;
   parent->AddChild(content);
   content->Show();
 }
 
 void Shell::PlatformResizeSubViews() {
 }
 
 void Shell::Close() {
   delete this;
 }
 
 void Shell::PlatformSetTitle(const base::string16& title) {
 }
 
 bool Shell::PlatformHandleContextMenu(
     const content::ContextMenuParams& params) {
   return false;
 }
 
 }  // namespace content