Remove OwnPtr from Blink.

third_party/WebKit/Source/modules/webmidi/MIDIController.h

Index: third_party/WebKit/Source/modules/webmidi/MIDIController.h
diff --git a/third_party/WebKit/Source/modules/webmidi/MIDIController.h b/third_party/WebKit/Source/modules/webmidi/MIDIController.h
index 4cf7bdfcfe23e434a6d71cac289af1f32a885f25..cdb7d4acc7708e3941ef17bee346944c7511a68c 100644
--- a/third_party/WebKit/Source/modules/webmidi/MIDIController.h
+++ b/third_party/WebKit/Source/modules/webmidi/MIDIController.h
@@ -33,6 +33,7 @@
 
 #include "core/frame/LocalFrame.h"
 #include "platform/heap/Handle.h"
+#include <memory>
 
 namespace blink {
 
@@ -48,17 +49,17 @@ public:
     void requestPermission(MIDIAccessInitializer*, const MIDIOptions&);
     void cancelPermissionRequest(MIDIAccessInitializer*);
 
-    static MIDIController* create(PassOwnPtr<MIDIClient>);
+    static MIDIController* create(std::unique_ptr<MIDIClient>);
     static const char* supplementName();
     static MIDIController* from(LocalFrame* frame) { return static_cast<MIDIController*>(Supplement<LocalFrame>::from(frame, supplementName())); }
 
     DEFINE_INLINE_VIRTUAL_TRACE() { Supplement<LocalFrame>::trace(visitor); }
 
 protected:
-    explicit MIDIController(PassOwnPtr<MIDIClient>);
+    explicit MIDIController(std::unique_ptr<MIDIClient>);
 
 private:
-    OwnPtr<MIDIClient> m_client;
+    std::unique_ptr<MIDIClient> m_client;
 };
 
 } // namespace blink