Move webkit/child/webkitplatformsupport_child_impl to content/

webkit/child/webthemeengine_impl_mac.h

 // 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.
 
 #ifndef WEBKIT_CHILD_WEBTHEMEENGINE_IMPL_MAC_H_
 #define WEBKIT_CHILD_WEBTHEMEENGINE_IMPL_MAC_H_
 
 #include "third_party/WebKit/public/platform/mac/WebThemeEngine.h"
+#include "webkit/child/webkit_child_export.h"
 
 namespace webkit_glue {
 
-class WebThemeEngineImpl : public blink::WebThemeEngine {
+class WEBKIT_CHILD_EXPORT WebThemeEngineImpl : public blink::WebThemeEngine {
  public:
   // blink::WebThemeEngine implementation.
   virtual void paintScrollbarThumb(
       blink::WebCanvas* canvas,
       blink::WebThemeEngine::State part,
       blink::WebThemeEngine::Size state,
       const blink::WebRect& rect,
       const blink::WebThemeEngine::ScrollbarInfo& extra_params);
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_CHILD_WEBTHEMEENGINE_IMPL_MAC_H_