[MediaRouter] The minimal change to make everything build on Android.

chrome/browser/ui/webui/media_router/media_router_dialog_controller.h

-// 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.
-
-#ifndef CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_MEDIA_ROUTER_DIALOG_CONTROLLER_H_
-#define CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_MEDIA_ROUTER_DIALOG_CONTROLLER_H_
-
-#include "base/macros.h"
-#include "chrome/browser/media/router/create_presentation_session_request.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "content/public/browser/web_contents_user_data.h"
-
-namespace media_router {
-
-// An instance of this class is tied to a WebContents known as the initiator,
-// and is lazily created when a Media Router dialog needs to be shown.
-// The MediaRouterDialogController allows creating, querying, and removing a
-// Media Router dialog modal to the initiator WebContents.
-// This class is not thread safe and must be called on the UI thread.
-class MediaRouterDialogController
-    : public content::WebContentsUserData<MediaRouterDialogController> {
- public:
-  ~MediaRouterDialogController() override;
-
-  // Gets a reference to the MediaRouterDialogController associated with
-  // |web_contents|, creating one if it does not exist. The returned pointer is
-  // guaranteed to be non-null.
-  static MediaRouterDialogController* GetOrCreateForWebContents(
-      content::WebContents* web_contents);
-
-  // Shows the media router dialog modal to the initiator WebContents.
-  // Creates the dialog if it did not exist prior to this call.
-  // If the dialog already exists, brings the dialog to the front.
-  // Returns WebContents for the media router dialog.
-  content::WebContents* ShowMediaRouterDialog();
-
-  // Creates a Media Router modal dialog using the initiator and parameters
-  // specified in |request|. If the dialog already exists, brings the dialog
-  // to the front, but does not change the dialog with |request|.
-  // Returns WebContents for the media router dialog if a dialog was created.
-  // Otherwise returns nullptr and |request| is deleted.
-  content::WebContents* ShowMediaRouterDialogForPresentation(
-      scoped_ptr<CreatePresentationSessionRequest> request);
-
-  // Returns the media router dialog WebContents.
-  // Returns nullptr if there is no dialog.
-  content::WebContents* GetMediaRouterDialog() const;
-
-  // Closes the media router dialog. This will destroy the dialog WebContents.
-  // It is an error to call this function if there is currently no dialog.
-  void CloseMediaRouterDialog();
-
- private:
-  class DialogWebContentsObserver;
-  class InitiatorWebContentsObserver;
-  friend class content::WebContentsUserData<MediaRouterDialogController>;
-
-  // Use MediaRouterDialogController::CreateForWebContents() to create an
-  // instance.
-  explicit MediaRouterDialogController(content::WebContents* web_contents);
-
-  // Creates a new media router dialog modal to |initiator_|.
-  void CreateMediaRouterDialog();
-
-  // Resets this dialog controller to an empty state.
-  void Reset();
-
-  // Invoked when the dialog WebContents has navigated.
-  void OnDialogNavigated(const content::LoadCommittedDetails& details);
-
-  void PopulateDialog(content::WebContents* media_router_dialog);
-
-  scoped_ptr<InitiatorWebContentsObserver> initiator_observer_;
-  scoped_ptr<DialogWebContentsObserver> dialog_observer_;
-
-  content::WebContents* const initiator_;
-
-  // True if the controller is waiting for a new media router dialog to be
-  // created.
-  bool media_router_dialog_pending_;
-
-  // Data for dialogs created under a Presentation API context.
-  // Passed from the caller of ShowMediaRouterDialogForPresentation(), and
-  // passed to the MediaRouterUI when it is initialized.
-  scoped_ptr<CreatePresentationSessionRequest> presentation_request_;
-
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(MediaRouterDialogController);
-};
-
-}  // namespace media_router
-
-#endif  // CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_MEDIA_ROUTER_DIALOG_CONTROLLER_H_