Allow content embedders to create AudioManager.

content/public/browser/content_browser_client.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_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <map>
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/memory/scoped_vector.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "content/public/browser/certificate_request_result_type.h"
 #include "content/public/browser/navigation_throttle.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/media_stream_request.h"
 #include "content/public/common/resource_type.h"
 #include "content/public/common/socket_permission_request.h"
 #include "content/public/common/window_container_type.h"
+#include "media/audio/audio_manager.h"
 #include "net/base/mime_util.h"
 #include "net/cookies/canonical_cookie.h"
 #include "storage/browser/fileapi/file_system_context.h"
 #include "third_party/WebKit/public/platform/WebPageVisibilityState.h"
 #include "ui/base/window_open_disposition.h"
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 #include "base/posix/global_descriptors.h"
 #endif
 
@@ skipping 661 matching lines @@
   virtual void RecordURLMetric(const std::string& metric, const GURL& url) {}
 
   // Allows the embedder to register one or more NavigationThrottles for the
   // navigation indicated by |navigation_handle|.  A NavigationThrottle is used
   // to control the flow of a navigation on the UI thread. The embedder is
   // guaranteed that the throttles will be executed in the order they were
   // provided.
   virtual ScopedVector<NavigationThrottle> CreateThrottlesForNavigation(
       NavigationHandle* navigation_handle);
 
+  // Allows the embedder to provide its own AudioManager implementation.
+  // If this function returns nullptr, a default platform implementation
+  // will be used.
+  virtual media::ScopedAudioManagerPtr CreateAudioManager(
+      media::AudioLogFactory* audio_log_factory);
   // Creates and returns a factory used for creating CDM instances for playing
   // protected content.
   virtual std::unique_ptr<media::CdmFactory> CreateCdmFactory();
 
   // Populates |mappings| with all files that need to be mapped before launching
   // a child process.
 #if defined(OS_ANDROID)
   virtual void GetAdditionalMappedFilesForChildProcess(
       const base::CommandLine& command_line,
       int child_process_id,
@@ skipping 35 matching lines @@
   // Allows an embedder to provide its own ExternalVideoSurfaceContainer
   // implementation.  Return nullptr to disable external surface video.
   virtual ExternalVideoSurfaceContainer*
   OverrideCreateExternalVideoSurfaceContainer(WebContents* web_contents);
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_