Make tab audible and muted states and cause available for an extension API

content/browser/web_contents/web_contents_impl.h

 // Copyright (c) 2012 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_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 229 matching lines @@
   const base::string16& GetLoadStateHost() const override;
   uint64 GetUploadSize() const override;
   uint64 GetUploadPosition() const override;
   std::set<GURL> GetSitesInTab() const override;
   const std::string& GetEncoding() const override;
   bool DisplayedInsecureContent() const override;
   void IncrementCapturerCount(const gfx::Size& capture_size) override;
   void DecrementCapturerCount() override;
   int GetCapturerCount() const override;
   bool IsAudioMuted() const override;
-  void SetAudioMuted(bool mute) override;
+  void SetAudioMuted(bool muted, const std::string& cause) override;
   bool IsCrashed() const override;
   void SetIsCrashed(base::TerminationStatus status, int error_code) override;
   base::TerminationStatus GetCrashedStatus() const override;
   bool IsBeingDestroyed() const override;
   void NotifyNavigationStateChanged(InvalidateTypes changed_flags) override;
   base::TimeTicks GetLastActiveTime() const override;
   void WasShown() override;
   void WasHidden() override;
   bool NeedToFireBeforeUnload() override;
   void DispatchBeforeUnload(bool for_cross_site_transition) override;
@@ skipping 626 matching lines @@
   // Called once when the last frame on the page has stopped loading.
   void DidStopLoading(RenderFrameHost* render_frame_host);
 
   // Misc non-view stuff -------------------------------------------------------
 
   // Helper functions for sending notifications.
   void NotifyViewSwapped(RenderViewHost* old_host, RenderViewHost* new_host);
   void NotifyFrameSwapped(RenderFrameHost* old_host, RenderFrameHost* new_host);
   void NotifyDisconnected();
 
+  void NotifyAudibleStateChanged(bool is_audible);
+  void NotifyMutedStateChanged(bool is_muted, const std::string& cause);
+
   void SetEncoding(const std::string& encoding);
 
   // TODO(creis): This should take in a FrameTreeNode to know which node's
   // render manager to return.  For now, we just return the root's.
   RenderFrameHostManager* GetRenderManager() const;
 
   RenderViewHostImpl* GetRenderViewHostImpl();
 
   // Removes browser plugin embedder if there is one.
   void RemoveBrowserPluginEmbedder();
@@ skipping 326 matching lines @@
   base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
 
   bool virtual_keyboard_requested_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_