Add support for autoGainControl and noiseSuppression to getCapabiliti…

…es()

This CL adds support for autoGainControl and noiseSuppression properties
to MediaStreamTrack.getCapabilities() and InputDeviceInfo.getCapabilities().

Bug: 823831, 817769
Change-Id: Ifdc0e560001e000b12c8d04634d3c52de0a34cc7
Reviewed-on: https://chromium-review.googlesource.com/977251
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Chandan Padhi <c.padhi@samsung.com>
Cr-Commit-Position: refs/heads/master@{#545750}

mediacapture-streams/MediaDevices-enumerateDevices.https.html

@@ -33,6 +33,8 @@ <h1 class="instructions">Description</h1>
         assert_equals(typeof capabilities.groupId, "string", "groupId must be a string.");
         if (mediainfo.kind == "audioinput") {
           assert_equals(typeof capabilities.echoCancellation, "object", "echoCancellation must be an object.");
+          assert_equals(typeof capabilities.autoGainControl, "object", "autoGainControl must be an object.");
+          assert_equals(typeof capabilities.noiseSuppression, "object", "noiseSuppression must be an object.");
         }
         if (mediainfo.kind == "videoinput") {
           assert_equals(typeof capabilities.facingMode, "object", "facingMode must be an object.");

mediacapture-streams/MediaStreamTrack-getCapabilities.https.html

@@ -12,6 +12,8 @@
       var videoCapabilities = stream.getVideoTracks()[0].getCapabilities();
       assert_true(undefined !== audioCapabilities.deviceId, "MediaTrackCapabilities's deviceId should exist for an audio track.");
       assert_true(undefined !== audioCapabilities.echoCancellation, "MediaTrackCapabilities's echoCancellation should exist for an audio track.");
+      assert_true(undefined !== audioCapabilities.autoGainControl, "MediaTrackCapabilities's autoGainControl should exist for an audio track.");
+      assert_true(undefined !== audioCapabilities.noiseSuppression, "MediaTrackCapabilities's noiseSuppression should exist for an audio track.");
       assert_true(undefined !== videoCapabilities.deviceId, "MediaTrackCapabilities's deviceId should exist for a video track.");
     });
   });