[GeometryInterface] Add Constructor() at DOMMatrixReadOnly.

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

Index: third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.cpp
diff --git a/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.cpp b/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.cpp
index 0b34d8bf78ff3d29f3704b555fc54322095281db..7c7f2ede94b480e8a5869fa9af2897653f5a6e82 100644
--- a/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.cpp
+++ b/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.cpp
@@ -85,6 +85,10 @@ bool DOMMatrixReadOnly::validateAndFixup(DOMMatrixInit& other,
   return true;
 }
 
+DOMMatrixReadOnly* DOMMatrixReadOnly::create(ExceptionState& exceptionState) {
+  return new DOMMatrixReadOnly(TransformationMatrix());
+}
+
 DOMMatrixReadOnly* DOMMatrixReadOnly::create(Vector<double> sequence,
                                              ExceptionState& exceptionState) {
   if (sequence.size() != 6 && sequence.size() != 16) {
@@ -249,6 +253,12 @@ DOMPoint* DOMMatrixReadOnly::transformPoint(const DOMPointInit& point) {
   return DOMPoint::create(x, y, z, w);
 }
 
+DOMMatrixReadOnly::DOMMatrixReadOnly(const TransformationMatrix& matrix,
+                                     bool is2D) {
+  m_matrix = TransformationMatrix::create(matrix);
+  m_is2D = is2D;
+}
+
 DOMFloat32Array* DOMMatrixReadOnly::toFloat32Array() const {
   float array[] = {
       static_cast<float>(m_matrix->m11()), static_cast<float>(m_matrix->m12()),