Bug 930393: Fix missing include of nsIDocument.h in nsBaseWidget.cpp, to fix --disable-accessibility builds. r=roc

widget/xpwidgets/nsBaseWidget.cpp

@@ -18,6 +18,7 @@
 #include "nsAppDirectoryServiceDefs.h"
 #include "nsISimpleEnumerator.h"
 #include "nsIContent.h"
+#include "nsIDocument.h"
 #include "nsIServiceManager.h"
 #include "mozilla/Preferences.h"
 #include "BasicLayers.h"