Revert of Revert of Split out CSSParser public API

Source/core/editing/EditingStyle.cpp

Index: Source/core/editing/EditingStyle.cpp
diff --git a/Source/core/editing/EditingStyle.cpp b/Source/core/editing/EditingStyle.cpp
index 58403965f7ecd85681d17539231285fc8daa631a..62bcb4341fb7757daa519e048fe3431c1187782e 100644
--- a/Source/core/editing/EditingStyle.cpp
+++ b/Source/core/editing/EditingStyle.cpp
@@ -38,7 +38,7 @@
 #include "core/css/FontSize.h"
 #include "core/css/StylePropertySet.h"
 #include "core/css/StyleRule.h"
-#include "core/css/parser/BisonCSSParser.h"
+#include "core/css/parser/CSSParser.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
@@ -396,7 +396,8 @@
         return primitiveColor->getRGBA32Value();
 
     RGBA32 rgba = 0;
-    BisonCSSParser::parseColor(rgba, colorValue->cssText());
+    // FIXME: Why ignore the return value?
+    CSSParser::parseColor(rgba, colorValue->cssText());
     return rgba;
 }