PPAPI: Make blocking completion callbacks work.

ppapi/shared_impl/ppb_audio_config_shared.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/shared_impl/ppb_audio_config_shared.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_instance_api.h"
 
 namespace ppapi {
 
@@ skipping 32 matching lines @@
   return requested_sample_frame_count;
 }
 
 // static
 uint32_t PPB_AudioConfig_Shared::RecommendSampleFrameCount_1_1(
     PP_Instance instance,
     PP_AudioSampleRate sample_rate,
     uint32_t sample_frame_count) {
   // Version 1.1: Query the back-end hardware for sample rate and buffer size,
   // and recommend a best fit based on request.
-  thunk::EnterInstance enter(instance);
+  thunk::EnterInstanceNoLock enter(instance);
   if (enter.failed())
     return 0;
 
   // Get the hardware config.
   PP_AudioSampleRate hardware_sample_rate = static_cast<PP_AudioSampleRate>(
       enter.functions()->GetAudioHardwareOutputSampleRate(instance));
   uint32_t hardware_sample_frame_count =
       enter.functions()->GetAudioHardwareOutputBufferSize(instance);
   if (sample_frame_count < PP_AUDIOMINSAMPLEFRAMECOUNT)
     sample_frame_count = PP_AUDIOMINSAMPLEFRAMECOUNT;
@@ skipping 21 matching lines @@
     case PP_AUDIOSAMPLERATE_NONE:
       return 0;
   }
   // Unable to make a recommendation.
   return 0;
 }
 
 // static
 PP_AudioSampleRate PPB_AudioConfig_Shared::RecommendSampleRate(
     PP_Instance instance) {
-  thunk::EnterInstance enter(instance);
+  thunk::EnterInstanceNoLock enter(instance);
   if (enter.failed())
     return PP_AUDIOSAMPLERATE_NONE;
   PP_AudioSampleRate hardware_sample_rate = static_cast<PP_AudioSampleRate>(
     enter.functions()->GetAudioHardwareOutputSampleRate(instance));
   return hardware_sample_rate;
 }
 
 thunk::PPB_AudioConfig_API* PPB_AudioConfig_Shared::AsPPB_AudioConfig_API() {
   return this;
 }
@@ skipping 19 matching lines @@
   if (sample_frame_count > PP_AUDIOMAXSAMPLEFRAMECOUNT ||
       sample_frame_count < PP_AUDIOMINSAMPLEFRAMECOUNT)
     return false;
 
   sample_rate_ = sample_rate;
   sample_frame_count_ = sample_frame_count;
   return true;
 }
 
 }  // namespace ppapi