Remove OwnPtr from Blink.

third_party/WebKit/Source/platform/fonts/OrientationIterator.h

Index: third_party/WebKit/Source/platform/fonts/OrientationIterator.h
diff --git a/third_party/WebKit/Source/platform/fonts/OrientationIterator.h b/third_party/WebKit/Source/platform/fonts/OrientationIterator.h
index 30ec83b4115ddb1ca157fefb57ce917ca1d95b1f..a67650a85f920734e5889b944d521f31e487995d 100644
--- a/third_party/WebKit/Source/platform/fonts/OrientationIterator.h
+++ b/third_party/WebKit/Source/platform/fonts/OrientationIterator.h
@@ -10,6 +10,7 @@
 #include "platform/fonts/UTF16TextIterator.h"
 #include "wtf/Allocator.h"
 #include "wtf/Noncopyable.h"
+#include <memory>
 
 namespace blink {
 
@@ -27,7 +28,7 @@ public:
 
     bool consume(unsigned* orientationLimit, RenderOrientation*);
 private:
-    OwnPtr<UTF16TextIterator> m_utf16Iterator;
+    std::unique_ptr<UTF16TextIterator> m_utf16Iterator;
     unsigned m_bufferSize;
     bool m_atEnd;
 };