Roll 50: Copied IDLs, PYTHON scripts from WebKit removed deleted files in WebCore

modules/mediastream/MediaTrackConstraintSet.idl

+// Copyright 2015 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/getusermedia.html#idl-def-MediaTrackConstraintSet
+
+typedef ConstrainLongRange ConstrainLong;
+typedef ConstrainDoubleRange ConstrainDouble;
+typedef ConstrainBooleanParameters ConstrainBoolean;
+typedef ConstrainDOMStringParameters ConstrainDOMString;
+// The spec says that the typedefs should be:
+// typedef (long or ConstrainLongRange) ConstrainLong;
+// typedef (double or ConstrainDoubleRange) ConstrainDouble;
+// typedef (boolean or ConstrainBooleanParameters) ConstrainBoolean;
+// typedef (DOMString or sequence<DOMString> or ConstrainDomStringParameters) ConstrainDomString;
+// This is blocked on https://crbug.com/524424
+
+dictionary MediaTrackConstraintSet {
+    [RuntimeEnabled=MediaConstraints] ConstrainLong width;
+    [RuntimeEnabled=MediaConstraints] ConstrainLong height;
+    [RuntimeEnabled=MediaConstraints] ConstrainDouble aspectRatio;
+    [RuntimeEnabled=MediaConstraints] ConstrainDouble frameRate;
+    [RuntimeEnabled=MediaConstraints] ConstrainDOMString facingMode;
+    [RuntimeEnabled=MediaConstraints] ConstrainDouble volume;
+    [RuntimeEnabled=MediaConstraints] ConstrainLong sampleRate;
+    [RuntimeEnabled=MediaConstraints] ConstrainLong sampleSize;
+    [RuntimeEnabled=MediaConstraints] ConstrainBoolean echoCancellation;
+    [RuntimeEnabled=MediaConstraints] ConstrainDouble latency;
+    [RuntimeEnabled=MediaConstraints] ConstrainLong channelCount;
+    [RuntimeEnabled=MediaConstraints] ConstrainDOMString deviceId;
+    [RuntimeEnabled=MediaConstraints] ConstrainDOMString groupId;
+    // The "mandatory" and "_optional" members are retained for conformance
+    // with https://www.w3.org/TR/2013/WD-mediacapture-streams-20130903/
+    Dictionary mandatory;
+    sequence<Dictionary> _optional;
+};