Remove Disposed as a DocumentLifecycle state.

third_party/WebKit/Source/core/dom/DocumentLifecycle.h

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 62 matching lines @@
 
         // When RuntimeEnabledFeatures::slimmingPaintSynchronizedPaintingEnabled
         // (implied by slimmingPaintV2Enabled).
         InPaint,
         PaintClean,
 
         // Once the document starts shutting down, we cannot return
         // to the style/layout/compositing states.
         Stopping,
         Stopped,
-        Disposed,
     };
 
     class Scope {
         STACK_ALLOCATED();
         WTF_MAKE_NONCOPYABLE(Scope);
     public:
         Scope(DocumentLifecycle&, LifecycleState finalState);
         ~Scope();
 
     private:
@@ skipping 122 matching lines @@
     return m_state != InPerformLayout
         && m_state != InCompositingUpdate
         && m_state != InPaintInvalidation
         && m_state != InUpdatePaintProperties
         && m_state != InPaint;
 }
 
 } // namespace blink
 
 #endif