Add support for echoCancellation and deviceId to MediaStreamTrack.getSettings

third_party/WebKit/Source/modules/mediastream/MediaTrackSettings.idl

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // https://w3c.github.io/mediacapture-main/#idl-def-mediatracksettings
 
 dictionary MediaTrackSettings {
     long width;
     long height;
     double aspectRatio;
     double frameRate;
     DOMString facingMode;
     // volume, sampleRate and sampleSize are not implemented.
     // double volume;
     // long sampleRate;
     // long sampleSize;
-    // echoCancellation is not implemented: crbug.com/682245
-    // boolean echoCancellation;
+    boolean echoCancellation;
     // latency and channelCount are not implemented.
     // double latency;
     // long channelCount;
     DOMString deviceId;
     // groupId is not implemented.
     // DOMString groupId;
     // Media Capture Depth Stream Extensions
     // https://w3c.github.io/mediacapture-depth/#mediatracksettings-dictionary
     // TODO(aleksandar.stojiljkovic): videoKind, depthNear, depthFar,
     // focalLengthX and focalLengthY attributes should be declared as partial
@@ skipping 14 matching lines @@
     [RuntimeEnabled=ImageCapture] double            exposureCompensation;
     [RuntimeEnabled=ImageCapture] double            colorTemperature;
     [RuntimeEnabled=ImageCapture] double            iso;
     [RuntimeEnabled=ImageCapture] double            brightness;
     [RuntimeEnabled=ImageCapture] double            contrast;
     [RuntimeEnabled=ImageCapture] double            saturation;
     [RuntimeEnabled=ImageCapture] double            sharpness;
     [RuntimeEnabled=ImageCapture] double            zoom;
     [RuntimeEnabled=ImageCapture] boolean           torch;
 };