Let Flash join and be controlled by media session

extensions/browser/extension_web_contents_observer.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_EXTENSION_WEB_CONTENTS_OBSERVER_H_
 #define EXTENSIONS_BROWSER_EXTENSION_WEB_CONTENTS_OBSERVER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 82 matching lines @@
   void DidNavigateAnyFrame(content::RenderFrameHost* render_frame_host,
                            const content::LoadCommittedDetails& details,
                            const content::FrameNavigateParams& params) override;
 
   // Subclasses should call this first before doing their own message handling.
   bool OnMessageReceived(const IPC::Message& message,
                          content::RenderFrameHost* render_frame_host) override;
 
   // Per the documentation in WebContentsObserver, these two methods are invoked
   // when a Pepper plugin instance is attached/detached in the page DOM.
-  void PepperInstanceCreated() override;
-  void PepperInstanceDeleted() override;
+  void PepperInstanceCreated(int32_t pp_instance) override;
+  void PepperInstanceDeleted(int32_t pp_instance) override;
 
   // Returns the extension id associated with the given |render_frame_host|, or
   // the empty string if there is none.
   std::string GetExtensionIdFromFrame(
       content::RenderFrameHost* render_frame_host) const;
 
   // TODO(devlin): Remove these once callers are updated to use the FromFrame
   // equivalents.
   // Returns the extension or app associated with a render view host. Returns
   // NULL if the render view host is not for a valid extension.
@@ skipping 14 matching lines @@
   content::BrowserContext* browser_context_;
 
   ExtensionFunctionDispatcher dispatcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionWebContentsObserver);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_WEB_CONTENTS_OBSERVER_H_