Add a new parameter |latency| to PPB_Audio.

content/renderer/pepper/ppb_audio_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_RENDERER_PEPPER_PPB_AUDIO_IMPL_H_
 #define CONTENT_RENDERER_PEPPER_PPB_AUDIO_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/shared_memory.h"
@@ skipping 19 matching lines @@
   // Trusted initialization. You must call Init after this.
   //
   // Untrusted initialization should just call the static Create() function
   // to properly create & initialize this class.
   explicit PPB_Audio_Impl(PP_Instance instance);
 
   // Creation function for untrusted plugins. This handles all initialization
   // and will return 0 on failure.
   static PP_Resource Create(PP_Instance instance,
                             PP_Resource config_id,
-                            PPB_Audio_Callback audio_callback,
+                            const ppapi::AudioCallback& audio_callback,
                             void* user_data);
 
   // Initialization function for trusted init.
   bool Init(PP_Resource config_id,
-            PPB_Audio_Callback user_callback,
+            const ppapi::AudioCallback& user_callback,
             void* user_data);
 
   // Resource overrides.
   virtual ::ppapi::thunk::PPB_Audio_API* AsPPB_Audio_API() OVERRIDE;
 
   // PPB_Audio_API implementation.
   virtual PP_Resource GetCurrentConfig() OVERRIDE;
   virtual PP_Bool StartPlayback() OVERRIDE;
   virtual PP_Bool StopPlayback() OVERRIDE;
   virtual int32_t Open(
@@ skipping 10 matching lines @@
                                size_t shared_memory_size_,
                                base::SyncSocket::Handle socket) OVERRIDE;
 
   // AudioConfig used for creating this Audio object. We own a ref.
   ::ppapi::ScopedPPResource config_;
 
   // PluginDelegate audio object that we delegate audio IPC through. We don't
   // own this pointer but are responsible for calling Shutdown on it.
   PepperPlatformAudioOutput* audio_;
 
-  // Track frame count for passing on to PPB_Audio_Shared::SetStreamInfo().
-  int sample_frame_count_;
-
   DISALLOW_COPY_AND_ASSIGN(PPB_Audio_Impl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PPB_AUDIO_IMPL_H_