Fix HTML5 effectAllowed and dragEffect on Chrome Linux.

app/gtk_dnd_util.h

Index: app/gtk_dnd_util.h
diff --git a/app/gtk_dnd_util.h b/app/gtk_dnd_util.h
index 4471174790a967c64f2800fbe6c493cc872a3a2c..f68931d77cb33191ec57deed700be86e87ddb4b9 100644
--- a/app/gtk_dnd_util.h
+++ b/app/gtk_dnd_util.h
@@ -10,6 +10,7 @@
 #include <vector>
 
 #include "base/string16.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebDragOperation.h"
 
 class GURL;
 
@@ -77,6 +78,10 @@ bool ExtractNamedURL(GtkSelectionData* selection_data,
 bool ExtractURIList(GtkSelectionData* selection_data,
                     std::vector<GURL>* urls);
 
+// Convenience method for converting between a web drag operation and the GDK
+// equivalent.
+GdkDragAction WebDragOpToGdkDragAction(WebKit::WebDragOperationsMask op);
+
 }  // namespace gtk_dnd_util
 
 #endif  // APP_GTK_DND_UTIL_H_