Add implementation of WebThemeEngine for the Mac (declared by...

webkit/glue/webthemeengine_impl_mac.h

+// Copyright (c) 2010 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.
+
+#ifndef WEBKIT_GLUE_WEBTHEMEENGINE_IMPL_MAC_H_
+#define WEBKIT_GLUE_WEBTHEMEENGINE_IMPL_MAC_H_
+
+#include "third_party/WebKit/WebKit/chromium/public/mac/WebThemeEngine.h"
+
+namespace webkit_glue {
+
+class WebThemeEngineImpl : public WebKit::WebThemeEngine {
+ public:
+  // WebKit::WebThemeEngine implementation.
+  virtual void paintScrollbarThumb(
+      WebKit::WebCanvas*,
+      WebKit::WebThemeEngine::State,
+      WebKit::WebThemeEngine::Size,
+      const WebKit::WebRect&,
+      const WebKit::WebThemeEngine::ScrollbarInfo&);
+};
+
+}  // namespace webkit_glue
+
+#endif  // WEBKIT_GLUE_WEBTHEMEENGINE_IMPL_MAC_H_