Simply FrameLoaderStateMachine and FrameLoader::transitionToCommitted().

Source/core/loader/FrameLoaderStateMachine.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer. 
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 28 matching lines @@
 { 
 }
     
 bool FrameLoaderStateMachine::committingFirstRealLoad() const 
 {
     return m_state == DisplayingInitialEmptyDocument;
 }
 
 bool FrameLoaderStateMachine::committedFirstRealDocumentLoad() const 
 {
-    return m_state >= DisplayingInitialEmptyDocumentPostCommit;
+    return m_state >= CommittedFirstRealLoad;
 }
 
 bool FrameLoaderStateMachine::creatingInitialEmptyDocument() const 
 {
     return m_state == CreatingInitialEmptyDocument;
 }
 
 bool FrameLoaderStateMachine::isDisplayingInitialEmptyDocument() const 
 {
-    return m_state == DisplayingInitialEmptyDocument || m_state == DisplayingInitialEmptyDocumentPostCommit;
-}
-
-bool FrameLoaderStateMachine::firstLayoutDone() const
-{
-    return m_state == FirstLayoutDone;
+    return m_state == DisplayingInitialEmptyDocument;
 }
 
 void FrameLoaderStateMachine::advanceTo(State state)
 {
-    ASSERT(State(m_state + 1) == state || (firstLayoutDone() && state == CommittedFirstRealLoad));
+    ASSERT(State(m_state + 1) == state);
     m_state = state;
 }
 
 } // namespace WebCore