Add missing methods to WebRtcAudioDeviceNotImpl.

content/renderer/media/webrtc_audio_device_not_impl.cc

Index: content/renderer/media/webrtc_audio_device_not_impl.cc
diff --git a/content/renderer/media/webrtc_audio_device_not_impl.cc b/content/renderer/media/webrtc_audio_device_not_impl.cc
index a86fca0cdeee0cb7147f7b4bd794714142b5a6ab..016c32e595d20cd7a0d355abe19bae94395f61b6 100644
--- a/content/renderer/media/webrtc_audio_device_not_impl.cc
+++ b/content/renderer/media/webrtc_audio_device_not_impl.cc
@@ -270,4 +270,32 @@ int32_t WebRtcAudioDeviceNotImpl::EnableBuiltInAEC(bool enable) {
   return 0;
 }
 
+bool WebRtcAudioDeviceNotImpl::BuiltInAGCIsAvailable() const {
+  return false;
+}
+
+int32_t WebRtcAudioDeviceNotImpl::EnableBuiltInAGC(bool enable) {
+  return 0;
+}
+
+bool WebRtcAudioDeviceNotImpl::BuiltInNSIsAvailable() const {
+  return false;
+}
+
+int32_t WebRtcAudioDeviceNotImpl::EnableBuiltInNS(bool enable) {
+  return 0;
+}
+
+#if defined(OS_IOS)
+int WebRtcAudioDeviceNotImpl::GetPlayoutAudioParameters(
+    AudioParameters* params) const {
+  return 0;
+}
+
+int WebRtcAudioDeviceNotImpl::GetRecordAudioParameters(
+    AudioParameters* params) const {
+  return 0;
+}
+#endif  // OS_IOS
+
 }  // namespace content