Add OVERRIDE to webkit/.

webkit/plugins/npapi/test/plugin_thread_async_call_test.h

Index: webkit/plugins/npapi/test/plugin_thread_async_call_test.h
diff --git a/webkit/plugins/npapi/test/plugin_thread_async_call_test.h b/webkit/plugins/npapi/test/plugin_thread_async_call_test.h
index 69622762a5f72e2c8944a5b1b6879d8998ff4372..60a6bb637f93d6ab7760d2292eb4843ac39a1abb 100644
--- a/webkit/plugins/npapi/test/plugin_thread_async_call_test.h
+++ b/webkit/plugins/npapi/test/plugin_thread_async_call_test.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -21,9 +21,9 @@ class PluginThreadAsyncCallTest : public PluginTest {
   virtual ~PluginThreadAsyncCallTest();
 
   virtual NPError New(uint16 mode, int16 argc, const char* argn[],
-                      const char* argv[], NPSavedData* saved);
+                      const char* argv[], NPSavedData* saved) OVERRIDE;
 
-  virtual NPError Destroy();
+  virtual NPError Destroy() OVERRIDE;
 
   void AsyncCall();
   void OnCallSucceeded();