Remove OwnPtr from Blink.

third_party/WebKit/Source/core/dom/ContextFeatures.h

Index: third_party/WebKit/Source/core/dom/ContextFeatures.h
diff --git a/third_party/WebKit/Source/core/dom/ContextFeatures.h b/third_party/WebKit/Source/core/dom/ContextFeatures.h
index 78766a60811612a09566ba38d393c13ed47c3cc5..16ea1954269a215f3d1f73255bf14fc401c19585 100644
--- a/third_party/WebKit/Source/core/dom/ContextFeatures.h
+++ b/third_party/WebKit/Source/core/dom/ContextFeatures.h
@@ -30,6 +30,7 @@
 #include "core/CoreExport.h"
 #include "core/page/Page.h"
 #include "platform/heap/Handle.h"
+#include <memory>
 
 namespace blink {
 
@@ -48,7 +49,7 @@ public:
 
     static const char* supplementName();
     static ContextFeatures& defaultSwitch();
-    static ContextFeatures* create(PassOwnPtr<ContextFeaturesClient>);
+    static ContextFeatures* create(std::unique_ptr<ContextFeaturesClient>);
 
     static bool pagePopupEnabled(Document*);
     static bool mutationEventsEnabled(Document*);
@@ -57,27 +58,27 @@ public:
     void urlDidChange(Document*);
 
 private:
-    explicit ContextFeatures(PassOwnPtr<ContextFeaturesClient> client)
+    explicit ContextFeatures(std::unique_ptr<ContextFeaturesClient> client)
         : m_client(std::move(client))
     { }
 
-    OwnPtr<ContextFeaturesClient> m_client;
+    std::unique_ptr<ContextFeaturesClient> m_client;
 };
 
 class ContextFeaturesClient {
     USING_FAST_MALLOC(ContextFeaturesClient);
 public:
-    static PassOwnPtr<ContextFeaturesClient> empty();
+    static std::unique_ptr<ContextFeaturesClient> empty();
 
     virtual ~ContextFeaturesClient() { }
     virtual bool isEnabled(Document*, ContextFeatures::FeatureType, bool defaultValue) { return defaultValue; }
     virtual void urlDidChange(Document*) { }
 };
 
-CORE_EXPORT void provideContextFeaturesTo(Page&, PassOwnPtr<ContextFeaturesClient>);
+CORE_EXPORT void provideContextFeaturesTo(Page&, std::unique_ptr<ContextFeaturesClient>);
 void provideContextFeaturesToDocumentFrom(Document&, Page&);
 
-inline ContextFeatures* ContextFeatures::create(PassOwnPtr<ContextFeaturesClient> client)
+inline ContextFeatures* ContextFeatures::create(std::unique_ptr<ContextFeaturesClient> client)
 {
     return new ContextFeatures(std::move(client));
 }