Remove OwnPtr from Blink.

third_party/WebKit/Source/bindings/core/v8/V8HiddenValue.h

Index: third_party/WebKit/Source/bindings/core/v8/V8HiddenValue.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8HiddenValue.h b/third_party/WebKit/Source/bindings/core/v8/V8HiddenValue.h
index b9bb81f441f910ea5e19083b962dd4a801bfa36e..d86fa3a8a273901ac34d9940bdd5eb5cb5cf2a0e 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8HiddenValue.h
+++ b/third_party/WebKit/Source/bindings/core/v8/V8HiddenValue.h
@@ -9,7 +9,8 @@
 #include "bindings/core/v8/ScriptPromiseProperties.h"
 #include "core/CoreExport.h"
 #include "wtf/Allocator.h"
-#include "wtf/PassOwnPtr.h"
+#include "wtf/PtrUtil.h"
+#include <memory>
 #include <v8.h>
 
 namespace blink {
@@ -61,7 +62,7 @@ class CORE_EXPORT V8HiddenValue {
     USING_FAST_MALLOC(V8HiddenValue);
     WTF_MAKE_NONCOPYABLE(V8HiddenValue);
 public:
-    static PassOwnPtr<V8HiddenValue> create() { return adoptPtr(new V8HiddenValue()); }
+    static std::unique_ptr<V8HiddenValue> create() { return wrapUnique(new V8HiddenValue()); }
 
 #define V8_DECLARE_METHOD(name) static v8::Local<v8::String> name(v8::Isolate* isolate);
     V8_HIDDEN_VALUES(V8_DECLARE_METHOD);