Remove OwnPtr from Blink.

third_party/WebKit/Source/core/workers/WorkerBackingThread.h

Index: third_party/WebKit/Source/core/workers/WorkerBackingThread.h
diff --git a/third_party/WebKit/Source/core/workers/WorkerBackingThread.h b/third_party/WebKit/Source/core/workers/WorkerBackingThread.h
index 3895867064b04b7f498ad5f0bde168e433827cbd..6fc16275ef713d78025736b7bbffa3d940a443a2 100644
--- a/third_party/WebKit/Source/core/workers/WorkerBackingThread.h
+++ b/third_party/WebKit/Source/core/workers/WorkerBackingThread.h
@@ -7,9 +7,9 @@
 
 #include "core/CoreExport.h"
 #include "wtf/Forward.h"
-#include "wtf/OwnPtr.h"
-#include "wtf/PassOwnPtr.h"
+#include "wtf/PtrUtil.h"
 #include "wtf/ThreadingPrimitives.h"
+#include <memory>
 #include <v8.h>
 
 namespace blink {
@@ -27,13 +27,13 @@ class WebThreadSupportingGC;
 // WorkerGlobalScopes) can share one WorkerBackingThread.
 class CORE_EXPORT WorkerBackingThread final {
 public:
-    static PassOwnPtr<WorkerBackingThread> create(const char* name) { return adoptPtr(new WorkerBackingThread(name, false)); }
-    static PassOwnPtr<WorkerBackingThread> create(WebThread* thread) { return adoptPtr(new WorkerBackingThread(thread, false)); }
+    static std::unique_ptr<WorkerBackingThread> create(const char* name) { return wrapUnique(new WorkerBackingThread(name, false)); }
+    static std::unique_ptr<WorkerBackingThread> create(WebThread* thread) { return wrapUnique(new WorkerBackingThread(thread, false)); }
 
     // These are needed to suppress leak reports. See
     // https://crbug.com/590802 and https://crbug.com/v8/1428.
-    static PassOwnPtr<WorkerBackingThread> createForTest(const char* name) { return adoptPtr(new WorkerBackingThread(name, true)); }
-    static PassOwnPtr<WorkerBackingThread> createForTest(WebThread* thread) { return adoptPtr(new WorkerBackingThread(thread, true)); }
+    static std::unique_ptr<WorkerBackingThread> createForTest(const char* name) { return wrapUnique(new WorkerBackingThread(name, true)); }
+    static std::unique_ptr<WorkerBackingThread> createForTest(WebThread* thread) { return wrapUnique(new WorkerBackingThread(thread, true)); }
 
     ~WorkerBackingThread();
 
@@ -59,7 +59,7 @@ private:
     WorkerBackingThread(const char* name, bool shouldCallGCOnShutdown);
     WorkerBackingThread(WebThread*, bool shouldCallGCOnSHutdown);
 
-    OwnPtr<WebThreadSupportingGC> m_backingThread;
+    std::unique_ptr<WebThreadSupportingGC> m_backingThread;
     v8::Isolate* m_isolate = nullptr;
     bool m_isOwningThread;
     bool m_shouldCallGCOnShutdown;