PR_LOG(gShellLogModuleInfo, PR_LOG_DEBUG,
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
PresShell::ContentHasBeenRemoved(nsIContent* aContainer,                                 nsIContent* aChild,                                 PRInt32     aIndexInContainer){  NS_PRECONDITION(nsnull != mRootFrame, "null root frame");  nsIFrame* frame = FindFrameWithContent(aContainer);  NS_PRECONDITION(nsnull != frame, "null frame");  PR_LOG(gShellLogModuleInfo, PR_LOG_DEBUG,     ("PresShell::ContentHasBeenRemoved: container=%p child=%p[%d] frame=%p",      aContainer, aChild, aIndexInContainer, frame));  frame->ContentDeleted(this, mPresContext, aContainer, aChild, aIndexInContainer);  ProcessReflowCommands();  return NS_OK;}