Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.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 DOMMatrixReadOnly_h
 #define DOMMatrixReadOnly_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/dom/DOMTypedArray.h"
 #include "platform/heap/Handle.h"
 #include "platform/transforms/TransformationMatrix.h"
-#include <memory>
 
 namespace blink {
 
 class DOMMatrix;
 
 class DOMMatrixReadOnly : public GarbageCollectedFinalized<DOMMatrixReadOnly>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     virtual ~DOMMatrixReadOnly();
 
@@ skipping 33 matching lines @@
 
     DOMFloat32Array* toFloat32Array() const;
     DOMFloat64Array* toFloat64Array() const;
 
     const TransformationMatrix& matrix() const { return *m_matrix; }
 
     DEFINE_INLINE_TRACE() { }
 
 protected:
     // TransformationMatrix needs to be 16-byte aligned. PartitionAlloc
-    // supports 16-byte alignment but Oilpan doesn't. So we use an std::unique_ptr
+    // supports 16-byte alignment but Oilpan doesn't. So we use an OwnPtr
     // to allocate TransformationMatrix on PartitionAlloc.
     // TODO(oilpan): Oilpan should support 16-byte aligned allocations.
-    std::unique_ptr<TransformationMatrix> m_matrix;
+    OwnPtr<TransformationMatrix> m_matrix;
     bool m_is2D;
 };
 
 } // namespace blink
 
 #endif