It's not safe to delete the balloon view during MenuDelegate::StoppedShowing,...

chrome/browser/ui/gtk/notifications/balloon_view_gtk.cc

Index: chrome/browser/ui/gtk/notifications/balloon_view_gtk.cc
===================================================================
--- chrome/browser/ui/gtk/notifications/balloon_view_gtk.cc	(revision 75617)
+++ chrome/browser/ui/gtk/notifications/balloon_view_gtk.cc	(working copy)
@@ -459,9 +459,13 @@
 
 // Called when the menu stops showing.
 void BalloonViewImpl::StoppedShowing() {
-  if (pending_close_)
-    DelayedClose(false);
   menu_showing_ = false;
+  if (pending_close_) {
+    MessageLoop::current()->PostTask(
+        FROM_HERE,
+        method_factory_.NewRunnableMethod(
+            &BalloonViewImpl::DelayedClose, false));
+  }

[Andrew T Wilson (Slow), 2011/02/23 00:43:58]

So, is the intent that DelayedClose() should never be called directly, but only
via PostTask? If so, we should probably document this. I'm guessing the idea is
that it *could* be called directly, even though it isn't currently.

 }
 
 gboolean BalloonViewImpl::OnDestroy(GtkWidget* widget) {