[Presentation API] Plumbing of |onstatechange| from the Mojo service to the public/platform

content/renderer/presentation/presentation_dispatcher.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 CONTENT_RENDERER_PRESENTATION_PRESENTATION_DISPATCHER_H_
 #define CONTENT_RENDERER_PRESENTATION_PRESENTATION_DISPATCHER_H_
 
 #include "base/compiler_specific.h"
-#include "base/memory/scoped_vector.h"
 #include "content/common/content_export.h"
 #include "content/common/presentation/presentation_service.mojom.h"
 #include "content/public/renderer/render_frame_observer.h"
-#include "content/renderer/presentation/presentation_session_dispatcher.h"
 #include "third_party/WebKit/public/platform/modules/presentation/WebPresentationClient.h"
 
 namespace blink {
 class WebString;
 }  // namespace blink
 
 namespace content {
 
 // PresentationDispatcher is a delegate for Presentation API messages used by
 // Blink. It forwards the calls to the Mojo PresentationService.
@@ skipping 26 matching lines @@
 
   void OnScreenAvailabilityChanged(
       const std::string& presentation_url,
       bool available);
   void OnSessionCreated(
       blink::WebPresentationSessionClientCallbacks* callback,
       presentation::PresentationSessionInfoPtr session_info,
       presentation::PresentationErrorPtr error);
   void OnDefaultSessionStarted(
       presentation::PresentationSessionInfoPtr session_info);
+  void OnSessionStateChange(
+      presentation::PresentationSessionInfoPtr session_info,
+      presentation::PresentationSessionState session_state);
 
   void ConnectToPresentationServiceIfNeeded();
 
   void DoUpdateAvailableChangeWatched(
       const std::string& presentation_url,
       bool watched);
 
   // Used as a weak reference. Can be null since lifetime is bound to the frame.
   blink::WebPresentationController* controller_;
   presentation::PresentationServicePtr presentation_service_;
-
-  // Wrappers around the PresentationSessionPtr corresponding to each Javascript
-  // PresentationSession object passed back to the frame.
-  // TODO(avayvod): Switch to base::IDMap when the lookup by presentation id is
-  // needed.
-  using PresentationSessionDispatchers =
-      ScopedVector<PresentationSessionDispatcher>;
-  PresentationSessionDispatchers presentation_session_dispatchers_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PRESENTATION_PRESENTATION_DISPATCHER_H_