Revert of Convert first letter into a pseudo element.

Source/core/rendering/RenderBoxModelObject.cpp

Index: Source/core/rendering/RenderBoxModelObject.cpp
diff --git a/Source/core/rendering/RenderBoxModelObject.cpp b/Source/core/rendering/RenderBoxModelObject.cpp
index 76ecbf15576a4116374d482d8c63f1fc14f1a175..69d48478fe7973028a88bf5f18a5f9356ea76bee 100644
--- a/Source/core/rendering/RenderBoxModelObject.cpp
+++ b/Source/core/rendering/RenderBoxModelObject.cpp
@@ -60,6 +60,11 @@ namespace blink {
 typedef WillBeHeapHashMap<RawPtrWillBeMember<const RenderBoxModelObject>, RawPtrWillBeMember<RenderBoxModelObject> > ContinuationMap;
 static OwnPtrWillBePersistent<ContinuationMap>* continuationMap = 0;
 
+// This HashMap is similar to the continuation map, but connects first-letter
+// renderers to their remaining text fragments.
+typedef WillBeHeapHashMap<RawPtrWillBeMember<const RenderBoxModelObject>, RawPtrWillBeMember<RenderTextFragment> > FirstLetterRemainingTextMap;
+static OwnPtrWillBePersistent<FirstLetterRemainingTextMap>* firstLetterRemainingTextMap = 0;
+
 void RenderBoxModelObject::setSelectionState(SelectionState state)
 {
     if (state == SelectionInside && selectionState() != SelectionNone)
@@ -108,6 +113,11 @@ void RenderBoxModelObject::willBeDestroyed()
     // A continuation of this RenderObject should be destroyed at subclasses.
     ASSERT(!continuation());
 
+    // If this is a first-letter object with a remaining text fragment then the
+    // entry needs to be cleared from the map.
+    if (firstLetterRemainingText())
+        setFirstLetterRemainingText(0);
+
     RenderLayerModelObject::willBeDestroyed();
 }
 
@@ -482,6 +492,24 @@ void RenderBoxModelObject::computeLayerHitTestRects(LayerHitTestRects& rects) co
         continuation()->computeLayerHitTestRects(rects);
 }
 
+RenderTextFragment* RenderBoxModelObject::firstLetterRemainingText() const
+{
+    if (!firstLetterRemainingTextMap)
+        return 0;
+    return (*firstLetterRemainingTextMap)->get(this);
+}
+
+void RenderBoxModelObject::setFirstLetterRemainingText(RenderTextFragment* remainingText)
+{
+    if (remainingText) {
+        if (!firstLetterRemainingTextMap)
+            firstLetterRemainingTextMap = new OwnPtrWillBePersistent<FirstLetterRemainingTextMap>(adoptPtrWillBeNoop(new FirstLetterRemainingTextMap));
+        (*firstLetterRemainingTextMap)->set(this, remainingText);
+    } else if (firstLetterRemainingTextMap) {
+        (*firstLetterRemainingTextMap)->remove(this);
+    }
+}
+
 LayoutRect RenderBoxModelObject::localCaretRectForEmptyElement(LayoutUnit width, LayoutUnit textIndentOffset)
 {
     ASSERT(!slowFirstChild());