Make AudioParameters a class instead of a struct

media/audio/android/audio_manager_android.cc

Index: media/audio/android/audio_manager_android.cc
diff --git a/media/audio/android/audio_manager_android.cc b/media/audio/android/audio_manager_android.cc
index 81264b51d511602f1b9d12fcd53f39b326ad56cb..f34c2c4a1336164c6e0f0841c7913c1370cf5175 100644
--- a/media/audio/android/audio_manager_android.cc
+++ b/media/audio/android/audio_manager_android.cc
@@ -42,24 +42,24 @@ void AudioManagerAndroid::UnMuteAll() {
 
 AudioOutputStream* AudioManagerAndroid::MakeLinearOutputStream(
       const AudioParameters& params) {
-  DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format);
+  DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format());
   return AudioTrackOutputStream::MakeStream(params);
 }
 
 AudioOutputStream* AudioManagerAndroid::MakeLowLatencyOutputStream(
       const AudioParameters& params) {
-  DCHECK_EQ(AudioParameters::AUDIO_PCM_LOW_LATENCY, params.format);
+  DCHECK_EQ(AudioParameters::AUDIO_PCM_LOW_LATENCY, params.format());
   return AudioTrackOutputStream::MakeStream(params);
 }
 
 AudioInputStream* AudioManagerAndroid::MakeLinearInputStream(
     const AudioParameters& params, const std::string& device_id) {
-  DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format);
+  DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format());
   return FakeAudioInputStream::MakeFakeStream(this, params);
 }
 
 AudioInputStream* AudioManagerAndroid::MakeLowLatencyInputStream(
     const AudioParameters& params, const std::string& device_id) {
-  DCHECK_EQ(AudioParameters::AUDIO_PCM_LOW_LATENCY, params.format);
+  DCHECK_EQ(AudioParameters::AUDIO_PCM_LOW_LATENCY, params.format());
   return FakeAudioInputStream::MakeFakeStream(this, params);
 }