Linux/Gtk: Drag source should not delete source data on drop in tab strip.

BUG=104949.
TEST=As described in the bug.

Review URL: http://codereview.chromium.org/8609009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@111316 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/gtk/tabs/tab_strip_gtk.cc

@@ -2143,7 +2143,7 @@ gboolean TabStripGtk::OnDragDataReceived(GtkWidget* widget,
     success = CompleteDrop(data->data, info == ui::TEXT_PLAIN);
   }
 
-  gtk_drag_finish(context, success, success, time);
+  gtk_drag_finish(context, success, FALSE, time);
   return TRUE;
 }