[GeometryInterface] Add Constructor() at DOMMatrixReadOnly.

third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.idl

 // Copyright 2014 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.
 
 // http://dev.w3.org/fxtf/geometry/#DOMMatrix
 
 [
+    Constructor,
     Constructor(sequence<unrestricted double> numberSequence),
     RaisesException=Constructor,
     // FIXME: Exposed=(Window,Worker)
     RuntimeEnabled=GeometryInterfaces,
 ] interface DOMMatrixReadOnly {
     [RaisesException, NewObject] static DOMMatrixReadOnly fromFloat32Array(Float32Array array32);
     [RaisesException, NewObject] static DOMMatrixReadOnly fromFloat64Array(Float64Array array64);
     [RaisesException, NewObject] static DOMMatrixReadOnly fromMatrix(optional DOMMatrixInit other);
 
     // These attributes are simple aliases for certain elements of the 4x4 matrix
@@ skipping 55 matching lines @@
     DOMMatrix flipY();
     DOMMatrix inverse();
 
     DOMPoint transformPoint(optional DOMPointInit point);
 
     Float32Array toFloat32Array();
     Float64Array toFloat64Array();
     stringifier;
     serializer = {attribute};
 };