Implement basic interfaces and attributes for DOMMatrix.

Source/core/dom/DOMMatrix.h

Index: Source/core/dom/DOMMatrix.h
diff --git a/Source/core/dom/DOMMatrix.h b/Source/core/dom/DOMMatrix.h
new file mode 100644
index 0000000000000000000000000000000000000000..2413bec0c51c236204628b06780d3ab345809f61
--- /dev/null
+++ b/Source/core/dom/DOMMatrix.h
@@ -0,0 +1,53 @@
+// 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 "core/dom/DOMMatrixReadOnly.h"
+
+namespace blink {
+
+class DOMMatrix : public DOMMatrixReadOnly {
+public:
+    static DOMMatrix* create();
+    static DOMMatrix* create(DOMMatrixReadOnly*);
+
+    void setA(double value) { setM11(value); }
+    void setB(double value) { setM12(value); }
+    void setC(double value) { setM21(value); }
+    void setD(double value) { setM22(value); }
+    void setE(double value) { setM41(value); }
+    void setF(double value) { setM42(value); }
+
+    void setM11(double value) { m_matrix[0][0] = value; }
+    void setM12(double value) { m_matrix[0][1] = value; }
+    void setM13(double value) { m_matrix[0][2] = value; setIs2D(!value); }
+    void setM14(double value) { m_matrix[0][3] = value; setIs2D(!value); }
+    void setM21(double value) { m_matrix[1][0] = value; }
+    void setM22(double value) { m_matrix[1][1] = value; }
+    void setM23(double value) { m_matrix[1][2] = value; setIs2D(!value); }
+    void setM24(double value) { m_matrix[1][3] = value; setIs2D(!value); }
+    void setM31(double value) { m_matrix[2][0] = value; setIs2D(!value); }
+    void setM32(double value) { m_matrix[2][1] = value; setIs2D(!value); }
+    void setM33(double value) { m_matrix[2][2] = value; setIs2D(value != 1); }
+    void setM34(double value) { m_matrix[2][3] = value; setIs2D(!value); }
+    void setM41(double value) { m_matrix[3][0] = value; }
+    void setM42(double value) { m_matrix[3][1] = value; }
+    void setM43(double value) { m_matrix[3][2] = value; setIs2D(!value); }
+    void setM44(double value) { m_matrix[3][3] = value; setIs2D(value != 1); }
+
+private:
+    DOMMatrix(double m11, double m12, double m13, double m14,
+        double m21, double m22, double m23, double m24,
+        double m31, double m32, double m33, double m34,
+        double m41, double m42, double m43, double m44,
+        bool is2D = true);
+
+    void setIs2D(bool value);
+};
+
+} // namespace blink
+
+#endif