Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/layout/svg/LayoutSVGResourcePattern.h

Index: third_party/WebKit/Source/core/layout/svg/LayoutSVGResourcePattern.h
diff --git a/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourcePattern.h b/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourcePattern.h
index 0c180980510f19e7b35ed3754d43c69bd8ec119a..e4709b167090f592b197bc7e5a8a7ac672d18660 100644
--- a/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourcePattern.h
+++ b/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourcePattern.h
@@ -26,8 +26,8 @@
 #include "core/svg/PatternAttributes.h"
 #include "platform/heap/Handle.h"
 #include "wtf/HashMap.h"
+#include "wtf/OwnPtr.h"
 #include "wtf/RefPtr.h"
-#include <memory>
 
 class SkPicture;
 
@@ -53,7 +53,7 @@ public:
     LayoutSVGResourceType resourceType() const override { return s_resourceType; }
 
 private:
-    std::unique_ptr<PatternData> buildPatternData(const LayoutObject&);
+    PassOwnPtr<PatternData> buildPatternData(const LayoutObject&);
     PassRefPtr<SkPicture> asPicture(const FloatRect& tile, const AffineTransform&) const;
     PatternData* patternForLayoutObject(const LayoutObject&);
 
@@ -71,7 +71,7 @@ private:
     // should be able to cache a single display list per LayoutSVGResourcePattern + one
     // Pattern(shader) for each client -- this would avoid re-recording when multiple clients
     // share the same pattern.
-    HashMap<const LayoutObject*, std::unique_ptr<PatternData>> m_patternMap;
+    HashMap<const LayoutObject*, OwnPtr<PatternData>> m_patternMap;
 };
 
 } // namespace blink