Remove dead markup serialization code.

sky/engine/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 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 25 matching lines @@
 #include "gen/sky/platform/RuntimeEnabledFeatures.h"
 #include "sky/engine/core/dom/Document.h"
 #include "sky/engine/core/dom/DocumentMarkerController.h"
 #include "sky/engine/core/dom/NodeRenderingTraversal.h"
 #include "sky/engine/core/dom/Text.h"
 #include "sky/engine/core/editing/Editor.h"
 #include "sky/engine/core/editing/FrameSelection.h"
 #include "sky/engine/core/editing/HTMLInterchange.h"
 #include "sky/engine/core/editing/InputMethodController.h"
 #include "sky/engine/core/editing/TextIterator.h"
-#include "sky/engine/core/editing/markup.h"
 #include "sky/engine/core/events/KeyboardEvent.h"
 #include "sky/engine/core/events/WheelEvent.h"
 #include "sky/engine/core/frame/FrameHost.h"
 #include "sky/engine/core/frame/FrameView.h"
 #include "sky/engine/core/frame/LocalFrame.h"
 #include "sky/engine/core/frame/Settings.h"
 #include "sky/engine/core/html/HTMLImportElement.h"
 #include "sky/engine/core/html/ime/InputMethodContext.h"
 #include "sky/engine/core/loader/FrameLoader.h"
 #include "sky/engine/core/loader/UniqueIdentifier.h"
@@ skipping 1762 matching lines @@
 void WebViewImpl::setVisibilityState(WebPageVisibilityState visibilityState,
                                      bool isInitialState) {
     if (!page())
         return;
 
     ASSERT(visibilityState == WebPageVisibilityStateVisible || visibilityState == WebPageVisibilityStateHidden);
     m_page->setVisibilityState(static_cast<PageVisibilityState>(static_cast<int>(visibilityState)), isInitialState);
 }
 
 } // namespace blink