[MediaRouter] Moved the code useful for Android to MediaRouterDialogController

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

Index: chrome/browser/media/android/router/media_router_dialog_controller_android.cc
diff --git a/chrome/browser/media/android/router/media_router_dialog_controller_android.cc b/chrome/browser/media/android/router/media_router_dialog_controller_android.cc
index 74943e480f8b0f31df3d94c235fd685691407e02..03701a6dda78184f618f5a875f322e8a0d68d960 100644
--- a/chrome/browser/media/android/router/media_router_dialog_controller_android.cc
+++ b/chrome/browser/media/android/router/media_router_dialog_controller_android.cc
@@ -26,19 +26,21 @@ MediaRouterDialogControllerAndroid::GetOrCreateForWebContents(
 }
 
 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());
+bool MediaRouterDialogControllerAndroid::IsShowingMediaRouterDialog() {
+  NOTIMPLEMENTED();
   return false;
 }
 
+void MediaRouterDialogControllerAndroid::CreateMediaRouterDialog() {
+  NOTIMPLEMENTED();
+}
+
 }  // namespace media_router