WIP: Brand-check on DOMMatrixReadOnly multiply.

third_party/WebKit/Source/core/dom/DOMMatrix.cpp

 // 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.
 
 #include "core/dom/DOMMatrix.h"
 
 namespace blink {
 
 DOMMatrix* DOMMatrix::create(ExceptionState& exceptionState) {
   return new DOMMatrix(TransformationMatrix());
 }
 
 DOMMatrix* DOMMatrix::create(DOMMatrixReadOnly* other,
                              ExceptionState& exceptionState) {
   return new DOMMatrix(other->matrix(), other->is2D());
 }
 
+DOMMatrix* DOMMatrix::create(const TransformationMatrix& matrix) {
+  return new DOMMatrix(matrix, matrix.isAffine());
+}
+
 DOMMatrix* DOMMatrix::create(const SkMatrix44& matrix,
                              ExceptionState& exceptionState) {
   TransformationMatrix transformationMatrix(matrix);
   return new DOMMatrix(transformationMatrix, transformationMatrix.isAffine());
 }
 
 DOMMatrix* DOMMatrix::create(const String& transformList,
                              ExceptionState& exceptionState) {
   DOMMatrix* matrix = new DOMMatrix(TransformationMatrix());
   matrix->setMatrixValueFromString(transformList, exceptionState);
@@ skipping 230 matching lines @@
   return this;
 }
 
 DOMMatrix* DOMMatrix::setMatrixValue(const String& inputString,
                                      ExceptionState& exceptionState) {
   setMatrixValueFromString(inputString, exceptionState);
   return this;
 }
 
 }  // namespace blink