Clean up PlatformThread.

webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc

Index: webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc
diff --git a/webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc b/webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc
index b8c19a28afe2fde7bfb86aabb186805cb5eaafb2..bdbccde05012ec35cd71048008e5a0182216fa57 100644
--- a/webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc
+++ b/webrtc/modules/audio_device/linux/audio_device_alsa_linux.cc
@@ -207,7 +207,7 @@ int32_t AudioDeviceLinuxALSA::Terminate()
     // RECORDING
     if (_ptrThreadRec)
     {
-        PlatformThread* tmpThread = _ptrThreadRec.release();
+        rtc::PlatformThread* tmpThread = _ptrThreadRec.release();
         _critSect.Leave();
 
         tmpThread->Stop();
@@ -219,7 +219,7 @@ int32_t AudioDeviceLinuxALSA::Terminate()
     // PLAYOUT
     if (_ptrThreadPlay)
     {
-        PlatformThread* tmpThread = _ptrThreadPlay.release();
+        rtc::PlatformThread* tmpThread = _ptrThreadPlay.release();
         _critSect.Leave();
 
         tmpThread->Stop();
@@ -1363,21 +1363,11 @@ int32_t AudioDeviceLinuxALSA::StartRecording()
         return -1;
     }
     // RECORDING
-    const char* threadName = "webrtc_audio_module_capture_thread";
-    _ptrThreadRec =
-        PlatformThread::CreateThread(RecThreadFunc, this, threadName);
+    _ptrThreadRec.reset(new rtc::PlatformThread(
+        RecThreadFunc, this, "webrtc_audio_module_capture_thread"));
 
-    if (!_ptrThreadRec->Start())
-    {
-        WEBRTC_TRACE(kTraceCritical, kTraceAudioDevice, _id,
-                     "  failed to start the rec audio thread");
-        _recording = false;
-        _ptrThreadRec.reset();
-        delete [] _recordingBuffer;
-        _recordingBuffer = NULL;
-        return -1;
-    }
-    _ptrThreadRec->SetPriority(kRealtimePriority);
+    _ptrThreadRec->Start();
+    _ptrThreadRec->SetPriority(rtc::kRealtimePriority);
 
     errVal = LATE(snd_pcm_prepare)(_handleRecord);
     if (errVal < 0)
@@ -1517,20 +1507,10 @@ int32_t AudioDeviceLinuxALSA::StartPlayout()
     }
 
     // PLAYOUT
-    const char* threadName = "webrtc_audio_module_play_thread";
-    _ptrThreadPlay =
-        PlatformThread::CreateThread(PlayThreadFunc, this, threadName);
-    if (!_ptrThreadPlay->Start())
-    {
-        WEBRTC_TRACE(kTraceCritical, kTraceAudioDevice, _id,
-                     "  failed to start the play audio thread");
-        _playing = false;
-        _ptrThreadPlay.reset();
-        delete [] _playoutBuffer;
-        _playoutBuffer = NULL;
-        return -1;
-    }
-    _ptrThreadPlay->SetPriority(kRealtimePriority);
+    _ptrThreadPlay.reset(new rtc::PlatformThread(
+        PlayThreadFunc, this, "webrtc_audio_module_play_thread"));
+    _ptrThreadPlay->Start();
+    _ptrThreadPlay->SetPriority(rtc::kRealtimePriority);
 
     int errVal = LATE(snd_pcm_prepare)(_handlePlayout);
     if (errVal < 0)