Remove OwnPtr from Blink.

third_party/WebKit/Source/modules/payments/PaymentRequestTest.cpp

Index: third_party/WebKit/Source/modules/payments/PaymentRequestTest.cpp
diff --git a/third_party/WebKit/Source/modules/payments/PaymentRequestTest.cpp b/third_party/WebKit/Source/modules/payments/PaymentRequestTest.cpp
index 1c79bf54174addb075ec6914b874ccaa431333f4..61e5e31be33433a9c11072cb684dc2406684574e 100644
--- a/third_party/WebKit/Source/modules/payments/PaymentRequestTest.cpp
+++ b/third_party/WebKit/Source/modules/payments/PaymentRequestTest.cpp
@@ -18,7 +18,7 @@
 #include "platform/heap/HeapAllocator.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "wtf/OwnPtr.h"
+#include <memory>
 #include <utility>
 
 namespace blink {
@@ -43,7 +43,7 @@ public:
     }
 
 private:
-    OwnPtr<DummyPageHolder> m_page;
+    std::unique_ptr<DummyPageHolder> m_page;
     TrackExceptionState m_exceptionState;
 };