Introduce wrapPersistent()/wrapCrossThreadPersistent()

third_party/WebKit/Source/platform/heap/Handle.h

Index: third_party/WebKit/Source/platform/heap/Handle.h
diff --git a/third_party/WebKit/Source/platform/heap/Handle.h b/third_party/WebKit/Source/platform/heap/Handle.h
index 69cb7575950ac9f977932624164767e83a43e6da..5881ba1a2d8820f48b4b6b47cdada1edbd9d3e73 100644
--- a/third_party/WebKit/Source/platform/heap/Handle.h
+++ b/third_party/WebKit/Source/platform/heap/Handle.h
@@ -1064,6 +1064,18 @@ private:
     CrossThreadWeakPersistent<T> m_value;
 };
 
+template <typename T>
+Persistent<T> wrapPersistent(T* value)
+{
+    return Persistent<T>(value);
+}
+
+template <typename T>
+CrossThreadPersistent<T> wrapCrossThreadPersistent(T* value)
+{
+    return CrossThreadPersistent<T>(value);
+}
+
 // LEAK_SANITIZER_DISABLED_SCOPE: all allocations made in the current scope
 // will be exempted from LSan consideration.
 //