[css-typed-om] add toMatrix() method in CSSTransformValue.idl

third_party/WebKit/Source/core/geometry/DOMMatrix.h

 // 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.
 
 #ifndef DOMMatrix_h
 #define DOMMatrix_h
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/StringOrUnrestrictedDoubleSequence.h"
 #include "core/dom/ArrayBufferViewHelpers.h"
@@ skipping 68 matching lines @@
   void setM43(double value) {
     matrix_->SetM43(value);
     SetIs2D(!value);
   }
   void setM44(double value) {
     matrix_->SetM44(value);
     SetIs2D(value != 1);
   }
 
   DOMMatrix* multiplySelf(DOMMatrixInit&, ExceptionState&);
+  DOMMatrix* multiplySelf(DOMMatrix* other_matrix);
   DOMMatrix* preMultiplySelf(DOMMatrixInit&, ExceptionState&);
   DOMMatrix* translateSelf(double tx = 0, double ty = 0, double tz = 0);
   DOMMatrix* scaleSelf(double sx = 1);
   DOMMatrix* scaleSelf(double sx,
                        double sy,
                        double sz = 1,
                        double ox = 0,
                        double oy = 0,
                        double oz = 0);
   DOMMatrix* scale3dSelf(double scale = 1,
@@ skipping 19 matching lines @@
   template <typename T>
   DOMMatrix(T sequence, int size);
 
   void SetIs2D(bool value);
   void SetNAN();
 };
 
 }  // namespace blink
 
 #endif