Remove OwnPtr from Blink.

third_party/WebKit/Source/core/page/EventSourceParser.h

Index: third_party/WebKit/Source/core/page/EventSourceParser.h
diff --git a/third_party/WebKit/Source/core/page/EventSourceParser.h b/third_party/WebKit/Source/core/page/EventSourceParser.h
index 7629b6843c7ef5ce0e1e725802f7a1161a3781f5..ffe8145917b94c467edf18fdcc533aad1505d35e 100644
--- a/third_party/WebKit/Source/core/page/EventSourceParser.h
+++ b/third_party/WebKit/Source/core/page/EventSourceParser.h
@@ -7,11 +7,11 @@
 
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
-#include "wtf/OwnPtr.h"
 #include "wtf/Vector.h"
 #include "wtf/text/AtomicString.h"
 #include "wtf/text/TextCodec.h"
 #include "wtf/text/WTFString.h"
+#include <memory>
 
 namespace blink {
 
@@ -49,7 +49,7 @@ private:
     AtomicString m_lastEventId;
 
     Member<Client> m_client;
-    OwnPtr<TextCodec> m_codec;
+    std::unique_ptr<TextCodec> m_codec;
 
     bool m_isRecognizingCRLF = false;
     bool m_isRecognizingBOM = true;