TestRunner library classes should be marked as NonCopyable.

Source/testing/runner/WebTestThemeEngineMac.h

 /*
  * Copyright (C) 2010 Google Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 // This implements the WebThemeEngine API in such a way that we match the Mac
 // port rendering more than usual Chromium path, thus allowing us to share
 // more pixel baselines.
 
 #ifndef WebTestThemeEngineMac_h
 #define WebTestThemeEngineMac_h
 
+#include "public/platform/WebNonCopyable.h"
 #include "public/platform/mac/WebThemeEngine.h"
 
 namespace WebTestRunner {
 
-class WebTestThemeEngineMac : public WebKit::WebThemeEngine {
+class WebTestThemeEngineMac : public WebKit::WebThemeEngine, public WebKit::WebNonCopyable {
 public:
     virtual void paintScrollbarThumb(
         WebKit::WebCanvas*,
         WebKit::WebThemeEngine::State,
         WebKit::WebThemeEngine::Size,
         const WebKit::WebRect&,
         const WebKit::WebThemeEngine::ScrollbarInfo&);
 
 private:
     virtual void paintHIThemeScrollbarThumb(
         WebKit::WebCanvas*,
         WebKit::WebThemeEngine::State,
         WebKit::WebThemeEngine::Size,
         const WebKit::WebRect&,
         const WebKit::WebThemeEngine::ScrollbarInfo&);
     virtual void paintNSScrollerScrollbarThumb(
         WebKit::WebCanvas*,
         WebKit::WebThemeEngine::State,
         WebKit::WebThemeEngine::Size,
         const WebKit::WebRect&,
         const WebKit::WebThemeEngine::ScrollbarInfo&);
 };
 
 }
 
 #endif // WebTestThemeEngineMac_h