Add GetOutputStreamParameters, GetAssociatedOutputDeviceID to AudioManager.

media/audio/mock_audio_manager.cc

Index: media/audio/mock_audio_manager.cc
diff --git a/media/audio/mock_audio_manager.cc b/media/audio/mock_audio_manager.cc
index 8e223fc504480653c2fcf7408e78d947418b31e2..0fd345fdaec3d34984f67e65501e8cd3eaa62154 100644
--- a/media/audio/mock_audio_manager.cc
+++ b/media/audio/mock_audio_manager.cc
@@ -79,9 +79,19 @@ AudioParameters MockAudioManager::GetDefaultOutputStreamParameters() {
   return AudioParameters();
 }
 
+AudioParameters MockAudioManager::GetOutputStreamParameters(
+      const std::string& device_id) {
+  return AudioParameters();
+}
+
 AudioParameters MockAudioManager::GetInputStreamParameters(
     const std::string& device_id) {
   return AudioParameters();
 }
 
+std::string MockAudioManager::GetAssociatedOutputDeviceID(
+    const std::string& input_device_id) {
+  return std::string();
+}
+
 }  // namespace media.