ppapi: Remove use of ALLOW_THIS_IN_INITIALIZER_LIST.

ppapi/proxy/ppb_audio_proxy.cc

 // 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.
 
 #include "ppapi/proxy/ppb_audio_proxy.h"
 
 #include "base/compiler_specific.h"
 #include "base/threading/simple_thread.h"
 #include "media/audio/shared_memory_util.h"
 #include "ppapi/c/pp_errors.h"
@@ skipping 111 matching lines @@
 int32_t Audio::GetSyncSocket(int* sync_socket) {
   return PP_ERROR_NOTSUPPORTED;  // Don't proxy the trusted interface.
 }
 
 int32_t Audio::GetSharedMemory(int* shm_handle, uint32_t* shm_size) {
   return PP_ERROR_NOTSUPPORTED;  // Don't proxy the trusted interface.
 }
 
 PPB_Audio_Proxy::PPB_Audio_Proxy(Dispatcher* dispatcher)
     : InterfaceProxy(dispatcher),
-      callback_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
+      callback_factory_(this) {
 }
 
 PPB_Audio_Proxy::~PPB_Audio_Proxy() {
 }
 
 // static
 PP_Resource PPB_Audio_Proxy::CreateProxyResource(
     PP_Instance instance_id,
     PP_Resource config_id,
     PPB_Audio_Callback audio_callback,
@@ skipping 198 matching lines @@
     static_cast<Audio*>(enter.object())->SetStreamInfo(
         enter.resource()->pp_instance(), handle.shmem(),
         media::PacketSizeInBytes(handle.size()),
         IPC::PlatformFileForTransitToPlatformFile(socket_handle.descriptor()),
         config.object()->GetSampleFrameCount());
   }
 }
 
 }  // namespace proxy
 }  // namespace ppapi