Fix Linux audio playback for short files

media/audio/linux/alsa_output_unittest.cc

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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 "base/message_loop.h"
 #include "base/string_util.h"
 #include "media/audio/linux/alsa_output.h"
 #include "media/audio/linux/alsa_wrapper.h"
 #include "media/audio/linux/audio_manager_linux.h"
 #include "media/base/data_buffer.h"
 #include "media/base/seekable_buffer.h"
@@ skipping 418 matching lines @@
 
   // Expect Device setup.
   EXPECT_CALL(mock_alsa_wrapper_, PcmDrop(kFakeHandle))
       .WillOnce(Return(0));
   EXPECT_CALL(mock_alsa_wrapper_, PcmPrepare(kFakeHandle))
       .WillOnce(Return(0));
 
   // Expect the pre-roll.
   MockAudioSourceCallback mock_callback;
   EXPECT_CALL(mock_alsa_wrapper_, PcmState(kFakeHandle))
-      .Times(2)
+      .Times(3)
       .WillRepeatedly(Return(SND_PCM_STATE_RUNNING));
   EXPECT_CALL(mock_alsa_wrapper_, PcmDelay(kFakeHandle, _))
       .Times(2)
       .WillRepeatedly(DoAll(SetArgumentPointee<1>(0), Return(0)));
   EXPECT_CALL(mock_callback,
               OnMoreData(test_stream_.get(), _, kTestPacketSize, _))
       .Times(2)
       .WillOnce(Return(kTestPacketSize))
       .WillOnce(Return(0));
   EXPECT_CALL(mock_alsa_wrapper_, PcmWritei(kFakeHandle, _, _))
@@ skipping 338 matching lines @@
 
   test_stream_->stop_stream_ = true;
   test_stream_->ScheduleNextWrite(true);
 
   // TODO(ajwong): Find a way to test whether or not another task has been
   // posted so we can verify that the Alsa code will indeed break the task
   // posting loop.
 
   test_stream_->shared_data_.TransitionTo(AlsaPcmOutputStream::kIsClosed);
 }