[Presentation API] 1-UA: send message between controller and receiver page

content/public/browser/presentation_service_delegate.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_PUBLIC_BROWSER_PRESENTATION_SERVICE_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_PRESENTATION_SERVICE_DELEGATE_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 34 matching lines @@
 };
 
 using PresentationConnectionStateChangedCallback =
     base::Callback<void(const PresentationConnectionStateChangeInfo&)>;
 
 // This class serves as a proxy to PSImpl.
 class OffscreenPresentationClient {
  public:
   OffscreenPresentationClient() {}
 
+  virtual void OnSessionMessages(
+      const content::PresentationSessionInfo& session,
+      const ScopedVector<PresentationSessionMessage>& messages,
+      bool pass_ownership) = 0;
+
   // For controller, add a receiver client
   // For receiver, add a controller client
   virtual void SetOffscreenPresentationClient(OffscreenPresentationClient*) = 0;
 
   virtual void RemoveOffscreenPresentationClient(
       OffscreenPresentationClient*) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(OffscreenPresentationClient);
 };
@@ skipping 176 matching lines @@
   // offscreen_presentation_manager->RegisterOffscreenPresentationController().
   virtual void RegisterOffscreenPresentationClient(
       int render_process_id,
       int render_frame_id,
       OffscreenPresentationClient*) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_PRESENTATION_SERVICE_DELEGATE_H_