Remove OwnPtr from Blink.

third_party/WebKit/Source/core/testing/DummyPageHolder.cpp

Index: third_party/WebKit/Source/core/testing/DummyPageHolder.cpp
diff --git a/third_party/WebKit/Source/core/testing/DummyPageHolder.cpp b/third_party/WebKit/Source/core/testing/DummyPageHolder.cpp
index 6747c7ee5d677629449f3acdfe88b2cde5015b78..a95add4e1e6b8e83d499dd3b55c647bd3e6bec78 100644
--- a/third_party/WebKit/Source/core/testing/DummyPageHolder.cpp
+++ b/third_party/WebKit/Source/core/testing/DummyPageHolder.cpp
@@ -38,6 +38,8 @@
 #include "core/frame/VisualViewport.h"
 #include "core/loader/EmptyClients.h"
 #include "wtf/Assertions.h"
+#include "wtf/PtrUtil.h"
+#include <memory>
 
 namespace blink {
 
@@ -46,12 +48,12 @@ void RootLayerScrollsFrameSettingOverride(Settings& settings)
     settings.setRootLayerScrolls(true);
 }
 
-PassOwnPtr<DummyPageHolder> DummyPageHolder::create(
+std::unique_ptr<DummyPageHolder> DummyPageHolder::create(
     const IntSize& initialViewSize,
     Page::PageClients* pageClients,
     FrameLoaderClient* frameLoaderClient,
     FrameSettingOverrideFunction settingOverrider) {
-    return adoptPtr(new DummyPageHolder(initialViewSize, pageClients, frameLoaderClient, settingOverrider));
+    return wrapUnique(new DummyPageHolder(initialViewSize, pageClients, frameLoaderClient, settingOverrider));
 }
 
 DummyPageHolder::DummyPageHolder(