Add FilePath to base namespace.

webkit/plugins/npapi/webplugin_impl.h

Index: webkit/plugins/npapi/webplugin_impl.h
diff --git a/webkit/plugins/npapi/webplugin_impl.h b/webkit/plugins/npapi/webplugin_impl.h
index 844ddd4a66f0e0bfe14102cd913c08e314d94c7a..90ac2802e714e71cb08b0fb6c91ab4596ddd2038 100644
--- a/webkit/plugins/npapi/webplugin_impl.h
+++ b/webkit/plugins/npapi/webplugin_impl.h
@@ -58,7 +58,7 @@ class WEBKIT_PLUGINS_EXPORT WebPluginImpl :
   WebPluginImpl(
       WebKit::WebFrame* frame,
       const WebKit::WebPluginParams& params,
-      const FilePath& file_path,
+      const base::FilePath& file_path,
       const base::WeakPtr<WebPluginPageDelegate>& page_delegate);
   virtual ~WebPluginImpl();
 
@@ -315,7 +315,7 @@ class WEBKIT_PLUGINS_EXPORT WebPluginImpl :
   WebPluginGeometry geometry_;
 
   // The location of the plugin on disk.
-  FilePath file_path_;
+  base::FilePath file_path_;
 
   // The mime type of the plugin.
   std::string mime_type_;