Enable the below APIs for iOS.

class VoEAudioProcessing
  int RegisterRxVadObserver();
  int DeRegisterRxVadObserver();
  int SetEcMetricsStatus();
  int GetEcMetricsStatus()
  int GetEchoMetrics();
  int GetEcDelayMetrics();

class VoENetEqStats
  int GetNetworkStatistics();

class VoEVolumeControl
  int SetChannelOutputVolumeScaling();
  int GetChannelOutputVolumeScaling();
Review URL: https://webrtc-codereview.appspot.com/1159004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@3719 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/voice_engine/voe_audio_processing_impl.cc b/voice_engine/voe_audio_processing_impl.cc
index dd1195c..ac491db 100644
--- a/voice_engine/voe_audio_processing_impl.cc
+++ b/voice_engine/voe_audio_processing_impl.cc
@@ -238,7 +238,8 @@
   }
 
   enabled = _shared->audio_processing()->gain_control()->is_enabled();
-  GainControl::Mode agcMode = _shared->audio_processing()->gain_control()->mode();
+  GainControl::Mode agcMode =
+    _shared->audio_processing()->gain_control()->mode();
 
   switch (agcMode) {
     case GainControl::kFixedDigital:
@@ -767,7 +768,6 @@
   WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
                "RegisterRxVadObserver()");
   ANDROID_NOT_SUPPORTED(_shared->statistics());
-  IPHONE_NOT_SUPPORTED(_shared->statistics());
 
   if (!_shared->statistics().Initialized()) {
     _shared->SetLastError(VE_NOT_INITED, kTraceError);
@@ -787,7 +787,6 @@
   WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
                "DeRegisterRxVadObserver()");
   ANDROID_NOT_SUPPORTED(_shared->statistics());
-  IPHONE_NOT_SUPPORTED(_shared->statistics());
 
   if (!_shared->statistics().Initialized()) {
     _shared->SetLastError(VE_NOT_INITED, kTraceError);
@@ -829,7 +828,6 @@
   WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
                "SetEcMetricsStatus(enable=%d)", enable);
   ANDROID_NOT_SUPPORTED(_shared->statistics());
-  IPHONE_NOT_SUPPORTED(_shared->statistics());
 
 #ifdef WEBRTC_VOICE_ENGINE_ECHO
   if (!_shared->statistics().Initialized()) {
@@ -857,7 +855,6 @@
   WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
                "GetEcMetricsStatus(enabled=?)");
   ANDROID_NOT_SUPPORTED(_shared->statistics());
-  IPHONE_NOT_SUPPORTED(_shared->statistics());
 
 #ifdef WEBRTC_VOICE_ENGINE_ECHO
   if (!_shared->statistics().Initialized()) {
@@ -895,7 +892,6 @@
   WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
                "GetEchoMetrics(ERL=?, ERLE=?, RERL=?, A_NLP=?)");
   ANDROID_NOT_SUPPORTED(_shared->statistics());
-  IPHONE_NOT_SUPPORTED(_shared->statistics());
 
 #ifdef WEBRTC_VOICE_ENGINE_ECHO
   if (!_shared->statistics().Initialized()) {
@@ -939,7 +935,6 @@
   WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
                "GetEcDelayMetrics(median=?, std=?)");
   ANDROID_NOT_SUPPORTED(_shared->statistics());
-  IPHONE_NOT_SUPPORTED(_shared->statistics());
 
 #ifdef WEBRTC_VOICE_ENGINE_ECHO
   if (!_shared->statistics().Initialized()) {
@@ -987,7 +982,6 @@
   }
 
   return _shared->audio_processing()->StartDebugRecording(fileNameUTF8);
-
 }
 
 int VoEAudioProcessingImpl::StopDebugRecording() {
@@ -1114,7 +1108,6 @@
       "SetTypingDetectionParameters is not supported");
   return -1;
 #endif
-
 }
 
 void VoEAudioProcessingImpl::EnableStereoChannelSwapping(bool enable) {
diff --git a/voice_engine/voe_neteq_stats_impl.cc b/voice_engine/voe_neteq_stats_impl.cc
index 94966cb..ef49846 100644
--- a/voice_engine/voe_neteq_stats_impl.cc
+++ b/voice_engine/voe_neteq_stats_impl.cc
@@ -55,7 +55,6 @@
     WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
                  "GetNetworkStatistics(channel=%d, stats=?)", channel);
     ANDROID_NOT_SUPPORTED(_shared->statistics());
-    IPHONE_NOT_SUPPORTED(_shared->statistics());
 
     if (!_shared->statistics().Initialized())
     {
diff --git a/voice_engine/voe_volume_control_impl.cc b/voice_engine/voe_volume_control_impl.cc
index 3d55c7f..6f35a2c 100644
--- a/voice_engine/voe_volume_control_impl.cc
+++ b/voice_engine/voe_volume_control_impl.cc
@@ -491,7 +491,6 @@
     WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
                "SetChannelOutputVolumeScaling(channel=%d, scaling=%3.2f)",
                channel, scaling);
-    IPHONE_NOT_SUPPORTED(_shared->statistics());
     if (!_shared->statistics().Initialized())
     {
         _shared->SetLastError(VE_NOT_INITED, kTraceError);
@@ -520,7 +519,6 @@
 {
     WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
                "GetChannelOutputVolumeScaling(channel=%d, scaling=?)", channel);
-    IPHONE_NOT_SUPPORTED(_shared->statistics());
     if (!_shared->statistics().Initialized())
     {
         _shared->SetLastError(VE_NOT_INITED, kTraceError);