[MediaRouter] Moved the code useful for Android to MediaRouterDialogController

chrome/browser/media/android/router/media_router_dialog_controller_android.cc

 // Copyright 2015 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 "chrome/browser/media/android/router/media_router_dialog_controller_android.h"
 
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(
     media_router::MediaRouterDialogControllerAndroid);
 
 using content::WebContents;
 
 namespace media_router {
 
 // static
 MediaRouterDialogControllerAndroid*
 MediaRouterDialogControllerAndroid::GetOrCreateForWebContents(
     WebContents* web_contents) {
   DCHECK(web_contents);
   // This call does nothing if the controller already exists.
   MediaRouterDialogControllerAndroid::CreateForWebContents(web_contents);
   return MediaRouterDialogControllerAndroid::FromWebContents(web_contents);
 }
 
 MediaRouterDialogControllerAndroid::MediaRouterDialogControllerAndroid(
-    WebContents* web_contents) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+    WebContents* web_contents)
+    : MediaRouterDialogController(web_contents) {
 }
 
 MediaRouterDialogControllerAndroid::~MediaRouterDialogControllerAndroid() {
-  DCHECK(thread_checker_.CalledOnValidThread());
 }
 
-bool MediaRouterDialogControllerAndroid::ShowMediaRouterDialogForPresentation(
-    scoped_ptr<CreatePresentationSessionRequest> request) {
-  DCHECK(thread_checker_.CalledOnValidThread());
+void MediaRouterDialogControllerAndroid::CreateMediaRouterDialog() {
+  NOTIMPLEMENTED();
+}
+
+void MediaRouterDialogControllerAndroid::CloseMediaRouterDialog() {
+  NOTIMPLEMENTED();
+}
+
+bool MediaRouterDialogControllerAndroid::IsShowingMediaRouterDialog() const {
+  NOTIMPLEMENTED();
   return false;
 }
 
 }  // namespace media_router