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 1f0d20c65d93438c17c281f8d13176dc4457eed3..e220aafb575545550b8c055dc8ac3b3dcff9835e 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;
 };