Convert first letter into a pseudo element.

Source/core/dom/PseudoElement.h

Index: Source/core/dom/PseudoElement.h
diff --git a/Source/core/dom/PseudoElement.h b/Source/core/dom/PseudoElement.h
index 25761531be3d1da66b308d000187aaa62bfb1690..965ac48745408b45185b16a919262a537e83e51c 100644
--- a/Source/core/dom/PseudoElement.h
+++ b/Source/core/dom/PseudoElement.h
@@ -32,6 +32,8 @@
 
 namespace blink {
 
+class RenderTextFragment;
+
 class PseudoElement FINAL : public Element {
 public:
     static PassRefPtrWillBeRawPtr<PseudoElement> create(Element* parent, PseudoId pseudoId)
@@ -51,19 +53,35 @@ public:
 
     void dispose();
 
+    void setRemainingTextRenderer(RenderTextFragment* fragment) { m_remainingTextRenderer = fragment; }
+    RenderTextFragment* remainingTextRenderer() const { return m_remainingTextRenderer; }
+
 private:
     PseudoElement(Element*, PseudoId);
+    void attachFirstLetterTextRenderers();
+    RenderStyle* styleForFirstLetter(RenderObject*);
 
     virtual void didRecalcStyle(StyleRecalcChange) OVERRIDE;
 
     PseudoId m_pseudoId;
+    RenderTextFragment* m_remainingTextRenderer;

[Julien - ping for review, 2014/10/01 21:14:47]

This screams adding a specialized class and so is the FirstLetterHelper class
that should just be added to the new class IMHO.

[dsinclair, 2014/10/04 02:01:34]

Done.

 };
 
 const QualifiedName& pseudoElementTagName();
 
 inline bool pseudoElementRendererIsNeeded(const RenderStyle* style)
 {
-    return style && style->display() != NONE && (style->styleType() == BACKDROP || style->contentData());
+    if (!style)
+        return false;
+    if (style->display() == NONE)
+        return false;
+    if (style->styleType() == FIRST_LETTER)
+        return true;
+    if (style->styleType() == BACKDROP)
+        return true;
+    if (style->contentData())
+        return true;
+    return false;
 }
 
 DEFINE_ELEMENT_TYPE_CASTS(PseudoElement, isPseudoElement());