Remove OwnPtr from Blink.

third_party/WebKit/Source/modules/presentation/PresentationAvailabilityTest.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/presentation/PresentationAvailability.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/V8BindingForTesting.h"
 #include "core/frame/LocalFrame.h"
 #include "core/page/Page.h"
 #include "core/testing/DummyPageHolder.h"
 #include "platform/testing/URLTestHelpers.h"
 #include "platform/weborigin/KURL.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include <memory>
 #include <v8.h>
 
 namespace blink {
 namespace {
 
 class PresentationAvailabilityTest : public ::testing::Test {
 public:
     PresentationAvailabilityTest()
         : m_scope(v8::Isolate::GetCurrent())
         , m_page(DummyPageHolder::create())
     {
     }
 
     void SetUp() override
     {
         m_scope.getScriptState()->setExecutionContext(&m_page->document());
     }
 
     Page& page() { return m_page->page(); }
     LocalFrame& frame() { return m_page->frame(); }
     ScriptState* getScriptState() { return m_scope.getScriptState(); }
 
 private:
     V8TestingScope m_scope;
-    OwnPtr<DummyPageHolder> m_page;
+    std::unique_ptr<DummyPageHolder> m_page;
 };
 
 TEST_F(PresentationAvailabilityTest, NoPageVisibilityChangeAfterDetach)
 {
     const KURL url = URLTestHelpers::toKURL("https://example.com");
     Persistent<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(getScriptState());
     Persistent<PresentationAvailability> availability = PresentationAvailability::take(resolver, url, false);
 
     // These two calls should not crash.
     frame().detach(FrameDetachType::Remove);
     page().setVisibilityState(PageVisibilityStateHidden, false);
 }
 
 } // anonymous namespace
 } // namespace blink