[Line Layout API] Convert most of InlineBoxPainter to new API

Source/core/layout/api/LineLayoutItem.h

Index: Source/core/layout/api/LineLayoutItem.h
diff --git a/Source/core/layout/api/LineLayoutItem.h b/Source/core/layout/api/LineLayoutItem.h
index e443ab316aeba3e7b8c576d06aa466b15060a3d0..9c3acdc0e6a2692c32e38c068ebfe6a155133932 100644
--- a/Source/core/layout/api/LineLayoutItem.h
+++ b/Source/core/layout/api/LineLayoutItem.h
@@ -18,6 +18,7 @@ class HitTestRequest;
 class HitTestLocation;
 class LayoutObject;
 class LineLayoutBox;
+class LineLayoutBoxModel;
 
 enum HitTestFilter;
 
@@ -65,6 +66,11 @@ public:
     // to the line layout code.
     LineLayoutBox containingBlock() const;
 
+    // Implemented in LineLayoutBoxModel.h
+    // Intentionally returns a BoxModel to avoid exposing LayoutBoxModelObject

[leviw_travelin_and_unemployed, 2015/08/21 18:37:14]

Intentionally returns LineLayoutBoxModel

+    // to the line layout code.
+    LineLayoutBoxModel enclosingBoxModelObject() const;
+
     LineLayoutItem container() const
     {
         return LineLayoutItem(m_layoutObject->container());