1 files changed, 3 insertions, 2 deletions
diff --git a/Source/WebKit2/WebProcess/Plugins/PluginView.h b/Source/WebKit2/WebProcess/Plugins/PluginView.h
index a6a056ccd..d1d985363 100644
--- a/Source/WebKit2/WebProcess/Plugins/PluginView.h
+++ b/Source/WebKit2/WebProcess/Plugins/PluginView.h
@@ -40,8 +40,9 @@
 // FIXME: Eventually this should move to WebCore.
 
 namespace WebCore {
-    class Frame;
-    class HTMLPlugInElement;
+class Frame;
+class HTMLPlugInElement;
+class RenderBoxModelObject;
 }
 
 namespace WebKit {