Convert first letter into a pseudo element.

Source/core/dom/RenderTreeBuilder.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 13 matching lines @@
  */
 
 #include "config.h"
 #include "core/dom/RenderTreeBuilder.h"
 
 #include "core/HTMLNames.h"
 #include "core/SVGNames.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/dom/Fullscreen.h"
 #include "core/dom/Node.h"
+#include "core/dom/PseudoElement.h"
 #include "core/dom/Text.h"
 #include "core/rendering/RenderFullScreen.h"
 #include "core/rendering/RenderObject.h"
 #include "core/rendering/RenderText.h"
 #include "core/rendering/RenderView.h"
 #include "core/svg/SVGElement.h"
 #include "platform/RuntimeEnabledFeatures.h"
 
 namespace blink {
 
 RenderObject* RenderTreeBuilder::nextRenderer() const
 {
     ASSERT(m_renderingParent);
 
     Element* element = m_node->isElementNode() ? toElement(m_node) : 0;
 
     if (element && element->isInTopLayer())
         return NodeRenderingTraversal::nextInTopLayer(element);
 
     // Avoid an O(N^2) walk over the children when reattaching all children of a node.
     if (m_renderingParent->needsAttach())
         return 0;
 
+    if (element && element->isFirstLetterPseudoElement())
+        return element->firstLetterTextRenderer();
+
     return NodeRenderingTraversal::nextSiblingRenderer(m_node);
 }
 
 RenderObject* RenderTreeBuilder::parentRenderer() const
 {
     ASSERT(m_renderingParent);
 
     Element* element = m_node->isElementNode() ? toElement(m_node) : 0;
 
+    if (element && element->isFirstLetterPseudoElement()) {
+        RenderObject* nextRenderer = element->firstLetterTextRenderer();
+        return nextRenderer ? nextRenderer->parent() : nullptr;
+    }
+
     if (element && m_renderingParent->renderer()) {
         // FIXME: Guarding this by m_renderingParent->renderer() isn't quite right as the spec for
         // top layer only talks about display: none ancestors so putting a <dialog> inside an
         // <optgroup> seems like it should still work even though this check will prevent it.
         if (element->isInTopLayer())
             return m_node->document().renderView();
     }
 
     return m_renderingParent->renderer();
 }
@@ skipping 92 matching lines @@
     newRenderer->setFlowThreadState(parentRenderer->flowThreadState());
 
     RenderObject* nextRenderer = this->nextRenderer();
     textNode->setRenderer(newRenderer);
     // Parent takes care of the animations, no need to call setAnimatableStyle.
     newRenderer->setStyle(m_style.release());
     parentRenderer->addChild(newRenderer, nextRenderer);
 }
 
 }