Limit MediaTrackSettings to implemented features

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;
+    // aspectRatio is not implemented.
+    // double aspectRatio;
     double frameRate;
     DOMString facingMode;
-    double volume;
-    long sampleRate;
-    long sampleSize;
-    boolean echoCancellation;
-    double latency;
-    long channelCount;
+    // volume, sampleRate and sampleSize are not implemented.
+    // double volume;
+    // long sampleRate;
+    // long sampleSize;
+    // echoCancellation is not implemented: crbug.com/682245
+    // boolean echoCancellation;
+    // latency and channelCount are not implemented.
+    // double latency;
+    // long channelCount;
     DOMString deviceId;
-    DOMString groupId;
+    // 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
     // dictionary but IDL parser can't support it yet. http://crbug.com/579896.
     [RuntimeEnabled=MediaCaptureDepth] DOMString videoKind;
     [RuntimeEnabled=MediaCaptureDepth] double depthNear;
     [RuntimeEnabled=MediaCaptureDepth] double depthFar;
     [RuntimeEnabled=MediaCaptureDepth] double focalLengthX;
     [RuntimeEnabled=MediaCaptureDepth] double focalLengthY;
 };