Field trial support to whenever possible turn off the AGC and HPF

webrtc/sdk/objc/Framework/Classes/RTCFieldTrials.mm

Index: webrtc/sdk/objc/Framework/Classes/RTCFieldTrials.mm
diff --git a/webrtc/sdk/objc/Framework/Classes/RTCFieldTrials.mm b/webrtc/sdk/objc/Framework/Classes/RTCFieldTrials.mm
index 28ce5414bd9fdd8ec9f92c471db071e0713cc9e2..e763b9f92e7039fc15c21258d17f5c46b891db5c 100644
--- a/webrtc/sdk/objc/Framework/Classes/RTCFieldTrials.mm
+++ b/webrtc/sdk/objc/Framework/Classes/RTCFieldTrials.mm
@@ -27,6 +27,8 @@ NSString * const kRTCFieldTrialImprovedBitrateEstimateKey = @"WebRTC-ImprovedBit
 NSString * const kRTCFieldTrialMedianSlopeFilterKey = @"WebRTC-BweMedianSlopeFilter";
 NSString * const kRTCFieldTrialTrendlineFilterKey = @"WebRTC-BweTrendlineFilter";
 NSString * const kRTCFieldTrialH264HighProfileKey = @"WebRTC-H264HighProfile";
+NSString *const kRTCFieldTrialMinimizeResamplingOnMobileKey =

[Per K, 2017/05/17 07:05:39]

nit: And you fix so that this file is consequent when it comes to where * is
used. 

[peah-webrtc, 2017/05/22 21:47:19]

Done.

+    @"WebRTC-Audio-MinimizeResamplingOnMobile";
 NSString * const kRTCFieldTrialEnabledValue = @"Enabled";
 
 static std::unique_ptr<char[]> gFieldTrialInitString;