Remove the AudioManager singleton.

media/audio/simple_sources_unittest.cc

 // 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/logging.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/fake_audio_output_stream.h"
 #include "media/audio/simple_sources.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 static void GenerateRandomData(char* buffer, uint32 len) {
   static bool called = false;
   if (!called) {
     called = true;
     int seed = static_cast<int>(base::Time::Now().ToInternalValue());
     srand(seed);
     VLOG(1) << "Random seed: " << seed;
   }
 
   for (uint32 i = 0; i < len; i++)
-    buffer[i] = static_cast<char>(rand());
+    buffer[i] = static_cast<char>(rand());  // NOLINT
 }
 
 // To test write size smaller than read size.
 TEST(SimpleSourcesTest, PushSourceSmallerWrite) {
   const uint32 kDataSize = 40960;
   scoped_array<char> data(new char[kDataSize]);
   GenerateRandomData(data.get(), kDataSize);
 
   // Choose two prime numbers for read and write sizes.
   const uint32 kWriteSize = 283;
@@ skipping 26 matching lines @@
 // do not affect the result. We also test that AudioManager::GetLastMockBuffer
 // works.
 TEST(SimpleSources, SineWaveAudio16MonoTest) {
   const uint32 samples = 1024;
   const uint32 bytes_per_sample = 2;
   const int freq = 200;
 
   SineWaveAudioSource source(SineWaveAudioSource::FORMAT_16BIT_LINEAR_PCM, 1,
                              freq, AudioParameters::kTelephoneSampleRate);
 
-  AudioManager* audio_man = AudioManager::GetAudioManager();
-  ASSERT_TRUE(NULL != audio_man);
+  scoped_refptr<AudioManager> audio_man(AudioManager::Create());
   AudioParameters params(
       AudioParameters::AUDIO_MOCK, CHANNEL_LAYOUT_MONO,
       AudioParameters::kTelephoneSampleRate, bytes_per_sample * 2, samples);
   AudioOutputStream* oas = audio_man->MakeAudioOutputStream(params);
   ASSERT_TRUE(NULL != oas);
   EXPECT_TRUE(oas->Open());
 
   oas->Start(&source);
   oas->Stop();
   oas->Close();
@@ skipping 10 matching lines @@
   EXPECT_EQ(0, last_buffer[0]);
   EXPECT_EQ(5126, last_buffer[1]);
   EXPECT_TRUE(last_buffer[1] < last_buffer[2]);
   EXPECT_TRUE(last_buffer[2] < last_buffer[3]);
   // Spot test negative incursion of sine wave.
   EXPECT_EQ(0, last_buffer[half_period]);
   EXPECT_EQ(-5126, last_buffer[half_period + 1]);
   EXPECT_TRUE(last_buffer[half_period + 1] > last_buffer[half_period + 2]);
   EXPECT_TRUE(last_buffer[half_period + 2] > last_buffer[half_period + 3]);
 }