Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/page/scrolling/ScrollState.h

Index: third_party/WebKit/Source/core/page/scrolling/ScrollState.h
diff --git a/third_party/WebKit/Source/core/page/scrolling/ScrollState.h b/third_party/WebKit/Source/core/page/scrolling/ScrollState.h
index 65f164d9db4e0131cb47be32cbee585b497fb954..050ee6b46e2ed4a6487ce38972c8641e7d5aad0c 100644
--- a/third_party/WebKit/Source/core/page/scrolling/ScrollState.h
+++ b/third_party/WebKit/Source/core/page/scrolling/ScrollState.h
@@ -12,7 +12,6 @@
 #include "platform/scroll/ScrollStateData.h"
 #include "wtf/Forward.h"
 #include <deque>
-#include <memory>
 
 namespace blink {
 
@@ -23,7 +22,7 @@ class CORE_EXPORT ScrollState final : public GarbageCollectedFinalized<ScrollSta
 
 public:
     static ScrollState* create(ScrollStateInit);
-    static ScrollState* create(std::unique_ptr<ScrollStateData>);
+    static ScrollState* create(PassOwnPtr<ScrollStateData>);
 
     ~ScrollState()
     {
@@ -93,9 +92,9 @@ public:
 
 private:
     ScrollState();
-    explicit ScrollState(std::unique_ptr<ScrollStateData>);
+    explicit ScrollState(PassOwnPtr<ScrollStateData>);
 
-    std::unique_ptr<ScrollStateData> m_data;
+    OwnPtr<ScrollStateData> m_data;
     std::deque<int> m_scrollChain;
 };