Replace extensions::ScopedPersistent with v8::UniquePersistent.

extensions/renderer/object_backed_native_handler.h

Index: extensions/renderer/object_backed_native_handler.h
diff --git a/extensions/renderer/object_backed_native_handler.h b/extensions/renderer/object_backed_native_handler.h
index f31103fb645bf63db32544aef36f6c32179f4ccb..b26c8391dc45a4a5949c6abfdf32df52f700f0fa 100644
--- a/extensions/renderer/object_backed_native_handler.h
+++ b/extensions/renderer/object_backed_native_handler.h
@@ -11,7 +11,6 @@
 #include "base/bind.h"
 #include "base/memory/linked_ptr.h"
 #include "extensions/renderer/native_handler.h"
-#include "extensions/renderer/scoped_persistent.h"
 #include "v8/include/v8-util.h"
 #include "v8/include/v8.h"
 
@@ -69,7 +68,7 @@ class ObjectBackedNativeHandler : public NativeHandler {
 
   ScriptContext* context_;
 
-  ScopedPersistent<v8::ObjectTemplate> object_template_;
+  v8::UniquePersistent<v8::ObjectTemplate> object_template_;
 
   DISALLOW_COPY_AND_ASSIGN(ObjectBackedNativeHandler);
 };