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

content/browser/presentation/presentation_service_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 CONTENT_BROWSER_PRESENTATION_PRESENTATION_SERVICE_IMPL_H_
 #define CONTENT_BROWSER_PRESENTATION_PRESENTATION_SERVICE_IMPL_H_
 
 #include <deque>
 
 #include "base/basictypes.h"
@@ skipping 160 matching lines @@
   void SetDefaultPresentationURL(
       const mojo::String& presentation_url,
       const mojo::String& presentation_id) override;
   void SetClient(presentation::PresentationServiceClientPtr client) override;
   void ListenForScreenAvailability() override;
   void StopListeningForScreenAvailability() override;
   void ListenForDefaultSessionStart(
       const DefaultSessionMojoCallback& callback) override;
   void StartSession(
       const mojo::String& presentation_url,
-      const mojo::String& presentation_id,
       const NewSessionMojoCallback& callback) override;
   void JoinSession(
       const mojo::String& presentation_url,
       const mojo::String& presentation_id,
       const NewSessionMojoCallback& callback) override;
   void SendSessionMessage(
       presentation::SessionMessagePtr session_message,
       const SendMessageMojoCallback& callback) override;
   void CloseSession(
       const mojo::String& presentation_url,
@@ skipping 109 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<PresentationServiceImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PresentationServiceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_PRESENTATION_PRESENTATION_SERVICE_IMPL_H_