Remove OwnPtr from Blink.

third_party/WebKit/Source/core/dom/custom/CustomElementTest.cpp

Index: third_party/WebKit/Source/core/dom/custom/CustomElementTest.cpp
diff --git a/third_party/WebKit/Source/core/dom/custom/CustomElementTest.cpp b/third_party/WebKit/Source/core/dom/custom/CustomElementTest.cpp
index f3a4b563a80daad825adec6c628f8a2e192f3705..8567a58ac7cad0d4d40f8bcad62d60c60258d8b4 100644
--- a/third_party/WebKit/Source/core/dom/custom/CustomElementTest.cpp
+++ b/third_party/WebKit/Source/core/dom/custom/CustomElementTest.cpp
@@ -10,6 +10,7 @@
 #include "core/html/HTMLElement.h"
 #include "core/testing/DummyPageHolder.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include <memory>
 
 namespace blink {
 
@@ -131,7 +132,7 @@ TEST(CustomElementTest, StateByParser)
     const char* bodyContent = "<div id=div></div>"
         "<a-a id=v1v0></a-a>"
         "<font-face id=v0></font-face>";
-    OwnPtr<DummyPageHolder> pageHolder = DummyPageHolder::create();
+    std::unique_ptr<DummyPageHolder> pageHolder = DummyPageHolder::create();
     Document& document = pageHolder->document();
     document.body()->setInnerHTML(String::fromUTF8(bodyContent), ASSERT_NO_EXCEPTION);
 
@@ -166,7 +167,7 @@ TEST(CustomElementTest, StateByCreateElement)
         { "font-face", CustomElementState::Uncustomized, Element::V0WaitingForUpgrade },
         { "_-X", CustomElementState::Uncustomized, Element::V0WaitingForUpgrade },
     };
-    OwnPtr<DummyPageHolder> pageHolder = DummyPageHolder::create();
+    std::unique_ptr<DummyPageHolder> pageHolder = DummyPageHolder::create();
     Document& document = pageHolder->document();
     for (const auto& data : createElementData) {
         Element* element = document.createElement(data.name, ASSERT_NO_EXCEPTION);