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

modules/mediastream/ConstrainDOMStringParameters.idl

Index: modules/mediastream/ConstrainDOMStringParameters.idl
diff --git a/modules/mediastream/ConstrainDOMStringParameters.idl b/modules/mediastream/ConstrainDOMStringParameters.idl
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+// 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-ConstrainLongRange
+
+dictionary ConstrainDOMStringParameters {
+  sequence<DOMString> exact;
+  sequence<DOMString> ideal;
+  // The spec says that the members should be:
+  //  (DOMString or sequence<DOMString>) exact;
+  //  (DOMString or sequence<DOMString>) ideal;
+  // This is blocked on https://crbug.com/524424
+};