[Alignment] Single class for holding the alignment data.

Source/core/css/resolver/StyleBuilderConverter.h

Index: Source/core/css/resolver/StyleBuilderConverter.h
diff --git a/Source/core/css/resolver/StyleBuilderConverter.h b/Source/core/css/resolver/StyleBuilderConverter.h
index 8d6a33301dd292b0d3dacacdabfd709247b03c1b..684c8924387ab9fb9771de8f1b60443cfea6b28b 100644
--- a/Source/core/css/resolver/StyleBuilderConverter.h
+++ b/Source/core/css/resolver/StyleBuilderConverter.h
@@ -58,6 +58,8 @@ public:
     static FontWeight convertFontWeight(StyleResolverState&, CSSValue*);
     static FontDescription::VariantLigatures convertFontVariantLigatures(StyleResolverState&, CSSValue*);
     static EGlyphOrientation convertGlyphOrientation(StyleResolverState&, CSSValue*);
+    static StyleAlignmentData convertSelfAlignmentData(StyleResolverState&, CSSValue*);

[Julien - ping for review, 2015/04/13 14:46:20]

This name doesn't really reflect the callers as it's called for both *-self and
*-items properties.

[jfernandez, 2015/04/14 00:18:42]

Ok, that's true. f we want to use the ComputedStyle initial value functions I'll
have to define a converter function for each property, which is probably a
better idea. 

+    static StyleAlignmentData convertContentAlignmentData(StyleResolverState&, CSSValue*);
     static GridAutoFlow convertGridAutoFlow(StyleResolverState&, CSSValue*);
     static GridPosition convertGridPosition(StyleResolverState&, CSSValue*);
     static GridTrackSize convertGridTrackSize(StyleResolverState&, CSSValue*);