Use union instead of overload fo DOMMatrix/DOMMatrixReadOnly

third_party/WebKit/Source/core/geometry/DOMMatrixReadOnly.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/geometry/DOMMatrixReadOnly.h"
 
 #include "bindings/core/v8/V8ObjectBuilder.h"
 #include "core/css/CSSIdentifierValue.h"
 #include "core/css/CSSToLengthConversionData.h"
 #include "core/css/CSSValueList.h"
@@ skipping 78 matching lines @@
                   other.m33() != 1 || other.m44() != 1);
     other.setIs2D(is2d);
   }
   return true;
 }
 
 DOMMatrixReadOnly* DOMMatrixReadOnly::Create(ExceptionState& exception_state) {
   return new DOMMatrixReadOnly(TransformationMatrix());
 }
 
-DOMMatrixReadOnly* DOMMatrixReadOnly::Create(const String& transform_list,
-                                             ExceptionState& exception_state) {
-  DOMMatrixReadOnly* matrix = new DOMMatrixReadOnly(TransformationMatrix());
-  matrix->SetMatrixValueFromString(transform_list, exception_state);
-  return matrix;
-}
+DOMMatrixReadOnly* DOMMatrixReadOnly::Create(
+    StringOrUnrestrictedDoubleSequence& init,
+    ExceptionState& exception_state) {
+  if (init.isString()) {
+    DOMMatrixReadOnly* matrix = new DOMMatrixReadOnly(TransformationMatrix());
+    matrix->SetMatrixValueFromString(init.getAsString(), exception_state);
+    return matrix;
+  }
 
-DOMMatrixReadOnly* DOMMatrixReadOnly::Create(Vector<double> sequence,
-                                             ExceptionState& exception_state) {
-  if (sequence.size() != 6 && sequence.size() != 16) {
-    exception_state.ThrowTypeError(
-        "The sequence must contain 6 elements for a 2D matrix or 16 elements "
-        "for a 3D matrix.");
-    return nullptr;
+  if (init.isUnrestrictedDoubleSequence()) {
+    const Vector<double>& sequence = init.getAsUnrestrictedDoubleSequence();
+    if (sequence.size() != 6 && sequence.size() != 16) {
+      exception_state.ThrowTypeError(
+          "The sequence must contain 6 elements for a 2D matrix or 16 elements "
+          "for a 3D matrix.");
+      return nullptr;
+    }
+    return new DOMMatrixReadOnly(sequence, sequence.size());
   }
-  return new DOMMatrixReadOnly(sequence, sequence.size());
+
+  NOTREACHED();
+  return nullptr;
 }
 
 DOMMatrixReadOnly* DOMMatrixReadOnly::fromFloat32Array(
     NotShared<DOMFloat32Array> float32_array,
     ExceptionState& exception_state) {
   if (float32_array.View()->length() != 6 &&
       float32_array.View()->length() != 16) {
     exception_state.ThrowTypeError(
         "The sequence must contain 6 elements for a 2D matrix or 16 elements a "
         "for 3D matrix.");
@@ skipping 268 matching lines @@
 
   matrix_->MakeIdentity();
   operations.Apply(FloatSize(0, 0), *matrix_);
 
   is2d_ = !operations.Has3DOperation();
 
   return;
 }
 
 }  // namespace blink