Remove OwnPtr from Blink.

third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp

Index: third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp
diff --git a/third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp b/third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp
index 887a16919f5b8f63787a8b15d8b887dcbad14645..6acc4d577402a6fa3bd20c6ff3f3de03afb60e84 100644
--- a/third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp
+++ b/third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp
@@ -17,6 +17,7 @@
 #include "core/dom/Document.h"
 #include "core/testing/DummyPageHolder.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include <memory>
 #include <v8.h>
 
 namespace blink {
@@ -35,7 +36,7 @@ protected:
 
     Document& document() const { return pageHolder->document(); }
 
-    OwnPtr<DummyPageHolder> pageHolder;
+    std::unique_ptr<DummyPageHolder> pageHolder;
     Persistent<Element> element;
     TrackExceptionState exceptionState;
 };