diff --git a/layout/generic/nsInlineFrame.cpp b/layout/generic/nsInlineFrame.cpp
index 68f2d0df7af..cde40c4fe09 100644
--- a/layout/generic/nsInlineFrame.cpp
+++ b/layout/generic/nsInlineFrame.cpp
@@ -258,6 +258,23 @@ nsInlineFrame::FindTextRuns(nsLineLayout&  aLineLayout,
   return rv;
 }
 
+void
+nsInlineFrame::InsertNewFrame(nsIFrame* aNewFrame, nsIFrame* aPrevSibling)
+{
+  nsIFrame* nextSibling = nsnull;
+
+  if (nsnull == aPrevSibling) {
+    if (nsnull != mFirstChild) {
+      mFirstChild->GetNextSibling(nextSibling);
+    }
+    mFirstChild = aNewFrame;
+  } else {
+    aPrevSibling->GetNextSibling(nextSibling);
+    aPrevSibling->SetNextSibling(aNewFrame);
+  }
+  aNewFrame->SetNextSibling(nextSibling);
+}
+
 NS_IMETHODIMP
 nsInlineFrame::InlineReflow(nsLineLayout&     aLineLayout,
                                nsReflowMetrics&     aMetrics,
@@ -300,11 +317,20 @@ nsInlineFrame::InlineReflow(nsLineLayout&     aLineLayout,
     if (this == target) {
       nsIReflowCommand::ReflowType type;
       state.reflowCommand->GetType(type);
+      nsIFrame* newFrame;
+      nsIFrame* prevSibling;
       switch (type) {
       case nsIReflowCommand::FrameAppended:
         rv = FrameAppendedReflow(state);
         break;
 
+      case nsIReflowCommand::FrameInserted:
+        // Link the new frame into the child list
+        state.reflowCommand->GetChildFrame(newFrame);
+        state.reflowCommand->GetPrevSiblingFrame(prevSibling);
+        InsertNewFrame(newFrame, prevSibling);
+        // fall thru...
+
       default:
         // XXX For now map the other incremental operations into full reflows
         rv = ResizeReflow(state);
diff --git a/layout/html/base/src/deadnsInlineFrame.h b/layout/html/base/src/deadnsInlineFrame.h
index 3ad085d4575..e69de29bb2d 100644
--- a/layout/html/base/src/deadnsInlineFrame.h
+++ b/layout/html/base/src/deadnsInlineFrame.h
@@ -1,129 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- *
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL.  You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation.  Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
- * Reserved.
- */
-#ifndef nsInlineFrame_h___
-#define nsInlineFrame_h___
-
-#include "nsHTMLContainerFrame.h"
-#include "nsInlineLayout.h"
-#include "nsLineLayout.h"
-
-class nsInlineFrame;
-class nsPlaceholderFrame;
-
-/**
- * Reflow state object for managing css inline layout. Most of the state
- * is managed by the nsInlineLayout object.
- */
-struct nsInlineReflowState : public nsReflowState {
-  nsInlineReflowState(nsLineLayout& aLineLayout,
-                      nsInlineFrame* aInlineFrame,
-                      nsIStyleContext* aInlineSC,
-                      const nsReflowState& aReflowState,
-                      PRBool aComputeMaxElementSize);
-  ~nsInlineReflowState();
-
-  nsIPresContext* mPresContext;
-  nsInlineLayout mInlineLayout;
-
-  nsIFrame* mLastChild;         // last child we have reflowed (so far)
-
-  nsMargin mBorderPadding;
-  PRBool mNoWrap;
-  PRIntn mStyleSizeFlags;
-  nsSize mStyleSize;
-};
-
-//----------------------------------------------------------------------
-
-/**
- * CSS "inline" layout class.
- *
- * Note: This class does not support being used as a pseudo frame.
- */
-class nsInlineFrame : public nsHTMLContainerFrame,
-                      public nsIInlineReflow
-{
-public:
-  // nsISupports
-  NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
-
-  // nsIFrame
-  NS_IMETHOD Init(nsIPresContext& aPresContext, nsIFrame* aChildList);
-  NS_IMETHOD CreateContinuingFrame(nsIPresContext&  aCX,
-                                   nsIFrame*        aParent,
-                                   nsIStyleContext* aStyleContext,
-                                   nsIFrame*&       aContinuingFrame);
-#if XXX_not_yet
-  NS_IMETHOD  Reflow(nsIPresContext&      aPresContext,
-                     nsReflowMetrics&     aDesiredSize,
-                     const nsReflowState& aReflowState,
-                     nsReflowStatus&      aStatus);
-#endif
-
-  // nsIInlineReflow
-  NS_IMETHOD FindTextRuns(nsLineLayout&  aLineLayout,
-                          nsIReflowCommand* aReflowCommand);
-  NS_IMETHOD InlineReflow(nsLineLayout&     aLineLayout,
-                          nsReflowMetrics&     aDesiredSize,
-                          const nsReflowState& aReflowState);
-
-  // nsContainerFrame
-  virtual PRBool DeleteNextInFlowsFor(nsIPresContext& aPresContext, nsIFrame* aChild);
-
-protected:
-  nsInlineFrame(nsIContent* aContent, nsIFrame* aParent);
-
-  virtual ~nsInlineFrame();
-
-  virtual PRIntn GetSkipSides() const;
-
-  nsresult InitialReflow(nsInlineReflowState& aState);
-
-  nsresult FrameAppendedReflow(nsInlineReflowState& aState);
-
-  nsresult ChildIncrementalReflow(nsInlineReflowState& aState);
-
-  nsresult ResizeReflow(nsInlineReflowState& aState);
-
-  void ComputeFinalSize(nsInlineReflowState& aState,
-                        nsReflowMetrics& aMetrics);
-
-  PRBool ReflowMapped(nsInlineReflowState& aState,
-                      nsInlineReflowStatus&   aReflowStatus);
-
-  PRBool PullUpChildren(nsInlineReflowState& aState,
-                        nsInlineReflowStatus&   aReflowStatus);
-
-  nsIFrame* PullOneChild(nsInlineFrame* aNextInFlow,
-                         nsIFrame*         aLastChild);
-
-  nsresult MaybeCreateNextInFlow(nsInlineReflowState& aState,
-                                 nsIFrame*               aFrame);
-
-  void PushKids(nsInlineReflowState& aState,
-                nsIFrame* aPrevChild, nsIFrame* aPushedChild);
-
-  void DrainOverflowLists();
-
-  nsresult AppendNewFrames(nsIPresContext* aPresContext, nsIFrame*);
-
-  friend nsresult NS_NewInlineFrame(nsIContent* aContent, nsIFrame* aParentFrame,
-                                    nsIFrame*& aNewFrame);
-};
-
-#endif /* nsInlineFrame_h___ */
diff --git a/layout/html/base/src/nsInlineFrame.cpp b/layout/html/base/src/nsInlineFrame.cpp
index 68f2d0df7af..cde40c4fe09 100644
--- a/layout/html/base/src/nsInlineFrame.cpp
+++ b/layout/html/base/src/nsInlineFrame.cpp
@@ -258,6 +258,23 @@ nsInlineFrame::FindTextRuns(nsLineLayout&  aLineLayout,
   return rv;
 }
 
+void
+nsInlineFrame::InsertNewFrame(nsIFrame* aNewFrame, nsIFrame* aPrevSibling)
+{
+  nsIFrame* nextSibling = nsnull;
+
+  if (nsnull == aPrevSibling) {
+    if (nsnull != mFirstChild) {
+      mFirstChild->GetNextSibling(nextSibling);
+    }
+    mFirstChild = aNewFrame;
+  } else {
+    aPrevSibling->GetNextSibling(nextSibling);
+    aPrevSibling->SetNextSibling(aNewFrame);
+  }
+  aNewFrame->SetNextSibling(nextSibling);
+}
+
 NS_IMETHODIMP
 nsInlineFrame::InlineReflow(nsLineLayout&     aLineLayout,
                                nsReflowMetrics&     aMetrics,
@@ -300,11 +317,20 @@ nsInlineFrame::InlineReflow(nsLineLayout&     aLineLayout,
     if (this == target) {
       nsIReflowCommand::ReflowType type;
       state.reflowCommand->GetType(type);
+      nsIFrame* newFrame;
+      nsIFrame* prevSibling;
       switch (type) {
       case nsIReflowCommand::FrameAppended:
         rv = FrameAppendedReflow(state);
         break;
 
+      case nsIReflowCommand::FrameInserted:
+        // Link the new frame into the child list
+        state.reflowCommand->GetChildFrame(newFrame);
+        state.reflowCommand->GetPrevSiblingFrame(prevSibling);
+        InsertNewFrame(newFrame, prevSibling);
+        // fall thru...
+
       default:
         // XXX For now map the other incremental operations into full reflows
         rv = ResizeReflow(state);