Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/graphics/gpu/Extensions3DUtil.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 Extensions3DUtil_h
 #define Extensions3DUtil_h
 
 #include "platform/PlatformExport.h"
 #include "third_party/khronos/GLES2/gl2.h"
 #include "wtf/Allocator.h"
 #include "wtf/HashSet.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/text/StringHash.h"
 #include "wtf/text/WTFString.h"
-#include <memory>
 
 namespace gpu {
 namespace gles2 {
 class GLES2Interface;
 }
 }
 
 namespace blink {
 
 class PLATFORM_EXPORT Extensions3DUtil final {
     USING_FAST_MALLOC(Extensions3DUtil);
     WTF_MAKE_NONCOPYABLE(Extensions3DUtil);
 public:
     // Creates a new Extensions3DUtil. If the passed GLES2Interface has been spontaneously lost, returns null.
-    static std::unique_ptr<Extensions3DUtil> create(gpu::gles2::GLES2Interface*);
+    static PassOwnPtr<Extensions3DUtil> create(gpu::gles2::GLES2Interface*);
     ~Extensions3DUtil();
 
     bool isValid() { return m_isValid; }
 
     bool supportsExtension(const String& name);
     bool ensureExtensionEnabled(const String& name);
     bool isExtensionEnabled(const String& name);
 
     static bool canUseCopyTextureCHROMIUM(GLenum destTarget, GLenum destFormat, GLenum destType, GLint level);
 
 private:
     Extensions3DUtil(gpu::gles2::GLES2Interface*);
     void initializeExtensions();
 
     gpu::gles2::GLES2Interface* m_gl;
     HashSet<String> m_enabledExtensions;
     HashSet<String> m_requestableExtensions;
     bool m_isValid;
 };
 
 } // namespace blink
 
 #endif // Extensions3DUtil_h