Adding functionality for activating for the WebRTC EchoCanceller3 functionality in Chrome.

content/public/common/content_features.h

Index: content/public/common/content_features.h
diff --git a/content/public/common/content_features.h b/content/public/common/content_features.h
index 87aab86508dad42ba011828bd69df9dfcde178ab..15db5e6a6e4bcf61e2ac76b3c6bf6960783bb975 100644
--- a/content/public/common/content_features.h
+++ b/content/public/common/content_features.h
@@ -67,6 +67,7 @@ CONTENT_EXPORT extern const base::Feature kWebGLImageChromium;
 CONTENT_EXPORT extern const base::Feature kWebRtcEcdsaDefault;
 CONTENT_EXPORT extern const base::Feature kWebRtcHWH264Encoding;
 CONTENT_EXPORT extern const base::Feature kWebRtcUseGpuMemoryBufferVideoFrames;
+CONTENT_EXPORT extern const base::Feature kUseEchoCanceller3;

[mcasas, 2017/02/10 18:13:01]

This should be ordered alphabetically.  
Or just s/kUseEcho/kWebRtcUseEcho/ which
will probably be better long term.

[peah, 2017/02/15 13:24:24]

Thanks!
Great name suggestion as well!
Done.

 CONTENT_EXPORT extern const base::Feature kWebUsb;
 CONTENT_EXPORT
 extern const base::Feature kSendBeaconThrowForBlobWithNonSimpleType;