WebContentsAudioMuter: Mute all audio output from a WebContentsImpl.

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 47 matching lines @@
 class MidiDispatcherHost;
 class PowerSaveBlocker;
 class RenderViewHost;
 class RenderViewHostDelegateView;
 class RenderViewHostImpl;
 class RenderWidgetHostImpl;
 class SavePackage;
 class ScreenOrientationDispatcherHost;
 class SiteInstance;
 class TestWebContents;
+class WebContentsAudioMuter;
 class WebContentsDelegate;
 class WebContentsImpl;
 class WebContentsObserver;
 class WebContentsView;
 class WebContentsViewDelegate;
 struct AXEventNotificationDetails;
 struct ColorSuggestion;
 struct FaviconURL;
 struct LoadNotificationDetails;
 struct ResourceRedirectDetails;
@@ skipping 161 matching lines @@
   virtual const net::LoadStateWithParam& GetLoadState() const OVERRIDE;
   virtual const base::string16& GetLoadStateHost() const OVERRIDE;
   virtual uint64 GetUploadSize() const OVERRIDE;
   virtual uint64 GetUploadPosition() const OVERRIDE;
   virtual std::set<GURL> GetSitesInTab() const OVERRIDE;
   virtual const std::string& GetEncoding() const OVERRIDE;
   virtual bool DisplayedInsecureContent() const OVERRIDE;
   virtual void IncrementCapturerCount(const gfx::Size& capture_size) OVERRIDE;
   virtual void DecrementCapturerCount() OVERRIDE;
   virtual int GetCapturerCount() const OVERRIDE;
+  virtual bool IsAudioMuted() const OVERRIDE;
+  virtual void SetAudioMuted(bool mute) OVERRIDE;
   virtual bool IsCrashed() const OVERRIDE;
   virtual void SetIsCrashed(base::TerminationStatus status,
                             int error_code) OVERRIDE;
   virtual base::TerminationStatus GetCrashedStatus() const OVERRIDE;
   virtual bool IsBeingDestroyed() const OVERRIDE;
   virtual void NotifyNavigationStateChanged(
       InvalidateTypes changed_flags) OVERRIDE;
   virtual base::TimeTicks GetLastActiveTime() const OVERRIDE;
   virtual void WasShown() OVERRIDE;
   virtual void WasHidden() OVERRIDE;
@@ skipping 975 matching lines @@
 
   scoped_ptr<ManifestManagerHost> manifest_manager_host_;
 
   // The accessibility mode for all frames. This is queried when each frame
   // is created, and broadcast to all frames when it changes.
   AccessibilityMode accessibility_mode_;
 
   // Monitors power levels for audio streams associated with this WebContents.
   AudioStreamMonitor audio_stream_monitor_;
 
+  // Created on-demand to mute all audio output from this WebContents.
+  scoped_ptr<WebContentsAudioMuter> audio_muter_;
+
   base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_