Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/web/ContextFeaturesClientImpl.h

Index: third_party/WebKit/Source/web/ContextFeaturesClientImpl.h
diff --git a/third_party/WebKit/Source/web/ContextFeaturesClientImpl.h b/third_party/WebKit/Source/web/ContextFeaturesClientImpl.h
index 3e1b9e3e6e81edaab94c31e7fb91d133ce390acb..64b5b07aee991c4e3f62854cb1971baf0470ae5b 100644
--- a/third_party/WebKit/Source/web/ContextFeaturesClientImpl.h
+++ b/third_party/WebKit/Source/web/ContextFeaturesClientImpl.h
@@ -32,16 +32,14 @@
 #define ContextFeaturesClientImpl_h
 
 #include "core/dom/ContextFeatures.h"
-#include "wtf/PtrUtil.h"
-#include <memory>
 
 namespace blink {
 
 class ContextFeaturesClientImpl final : public ContextFeaturesClient {
 public:
-    static std::unique_ptr<ContextFeaturesClientImpl> create()
+    static PassOwnPtr<ContextFeaturesClientImpl> create()
     {
-        return wrapUnique(new ContextFeaturesClientImpl());
+        return adoptPtr(new ContextFeaturesClientImpl());
     }
 
     bool isEnabled(Document*, ContextFeatures::FeatureType, bool defaultValue) override;