Convert first letter into a pseudo element.

Source/core/rendering/RenderObject.cpp

Index: Source/core/rendering/RenderObject.cpp
diff --git a/Source/core/rendering/RenderObject.cpp b/Source/core/rendering/RenderObject.cpp
index af60bc8dd846a6675e11db68a909bf99104f7cb2..dd022946e2d894467f1be0c3c4fcafca5d092f0e 100644
--- a/Source/core/rendering/RenderObject.cpp
+++ b/Source/core/rendering/RenderObject.cpp
@@ -1633,7 +1633,7 @@ StyleDifference RenderObject::adjustStyleDifference(StyleDifference diff) const
 
 void RenderObject::setPseudoStyle(PassRefPtr<RenderStyle> pseudoStyle)
 {
-    ASSERT(pseudoStyle->styleType() == BEFORE || pseudoStyle->styleType() == AFTER);
+    ASSERT(pseudoStyle->styleType() == BEFORE || pseudoStyle->styleType() == AFTER || pseudoStyle->styleType() == FIRST_LETTER);
 
     // FIXME: We should consider just making all pseudo items use an inherited style.
 
@@ -2655,7 +2655,9 @@ static PassRefPtr<RenderStyle> firstLineStyleForCachedUncachedType(StyleCacheSta
                 return firstLineBlock->getCachedPseudoStyle(FIRST_LINE, style);
             return firstLineBlock->getUncachedPseudoStyle(PseudoStyleRequest(FIRST_LINE), style, firstLineBlock == renderer ? style : 0);
         }
-    } else if (!rendererForFirstLineStyle->isAnonymous() && rendererForFirstLineStyle->isRenderInline()) {
+    } else if (!rendererForFirstLineStyle->isAnonymous() && rendererForFirstLineStyle->isRenderInline()
+        && (!rendererForFirstLineStyle->node() || !rendererForFirstLineStyle->node()->isFirstLetterPseudoElement())) {

[Julien - ping for review, 2014/10/09 18:24:48]

rendererForFirstLineStyle->node() will only return 0 for anonymous content and
the first close of the if checks for that. Thus I think that this check is
redundant and unneeded.

[dsinclair, 2014/10/09 21:14:22]

Done.

+
         RenderStyle* parentStyle = rendererForFirstLineStyle->parent()->firstLineStyle();
         if (parentStyle != rendererForFirstLineStyle->parent()->style()) {
             if (type == Cached) {