Presentation API: ignore presentation id passed to startSession().

chrome/browser/media/router/presentation_service_delegate_impl.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_MEDIA_ROUTER_PRESENTATION_SERVICE_DELEGATE_IMPL_H_
 #define CHROME_BROWSER_MEDIA_ROUTER_PRESENTATION_SERVICE_DELEGATE_IMPL_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 59 matching lines @@
       content::PresentationScreenAvailabilityListener* listener) override;
   void Reset(int render_process_id, int render_frame_id) override;
   void SetDefaultPresentationUrl(
       int render_process_id,
       int render_frame_id,
       const std::string& default_presentation_url,
       const std::string& default_presentation_id) override;
   void StartSession(int render_process_id,
                     int render_frame_id,
                     const std::string& presentation_url,
-                    const std::string& presentation_id,
                     const PresentationSessionSuccessCallback& success_cb,
                     const PresentationSessionErrorCallback& error_cb) override;
   void JoinSession(int render_process_id,
                    int render_frame_id,
                    const std::string& presentation_url,
                    const std::string& presentation_id,
                    const PresentationSessionSuccessCallback& success_cb,
                    const PresentationSessionErrorCallback& error_cb) override;
   void CloseSession(int render_process_id,
                     int render_frame_id,
@@ skipping 101 matching lines @@
   scoped_ptr<PresentationFrameManager> frame_manager_;
 
   base::WeakPtrFactory<PresentationServiceDelegateImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PresentationServiceDelegateImpl);
 };
 
 }  // namespace media_router
 
 #endif  // CHROME_BROWSER_MEDIA_ROUTER_PRESENTATION_SERVICE_DELEGATE_IMPL_H_