WIP: Brand-check on DOMMatrixReadOnly multiply.

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

Index: third_party/WebKit/Source/core/dom/DOMMatrix.cpp
diff --git a/third_party/WebKit/Source/core/dom/DOMMatrix.cpp b/third_party/WebKit/Source/core/dom/DOMMatrix.cpp
index 59c6ae4412f04aa6c0f8c2c0e4fb043a1bee1217..8821c5c3b7e8ebdd3562750a080fa58e5df47304 100644
--- a/third_party/WebKit/Source/core/dom/DOMMatrix.cpp
+++ b/third_party/WebKit/Source/core/dom/DOMMatrix.cpp
@@ -15,6 +15,10 @@ DOMMatrix* DOMMatrix::create(DOMMatrixReadOnly* other,
   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);