Remove OwnPtr from Blink.

third_party/WebKit/Source/core/style/CachedUAStyle.h

Index: third_party/WebKit/Source/core/style/CachedUAStyle.h
diff --git a/third_party/WebKit/Source/core/style/CachedUAStyle.h b/third_party/WebKit/Source/core/style/CachedUAStyle.h
index f9cadf8bcacf8a37abb6ca33ba430a53d73d91cb..347b4fe21869c5e43c7cff103248b5b0d7772781 100644
--- a/third_party/WebKit/Source/core/style/CachedUAStyle.h
+++ b/third_party/WebKit/Source/core/style/CachedUAStyle.h
@@ -25,6 +25,8 @@
 #include "core/style/ComputedStyle.h"
 #include "wtf/Allocator.h"
 #include "wtf/Noncopyable.h"
+#include "wtf/PtrUtil.h"
+#include <memory>
 
 namespace blink {
 
@@ -36,9 +38,9 @@ class CachedUAStyle {
     USING_FAST_MALLOC(CachedUAStyle);
     WTF_MAKE_NONCOPYABLE(CachedUAStyle);
 public:
-    static PassOwnPtr<CachedUAStyle> create(const ComputedStyle* style)
+    static std::unique_ptr<CachedUAStyle> create(const ComputedStyle* style)
     {
-        return adoptPtr(new CachedUAStyle(style));
+        return wrapUnique(new CachedUAStyle(style));
     }
 
     BorderData border;