Cleanup usage of CSSPropertyID and CSSValueID inside Blink.

Source/core/rendering/RenderThemeChromiumMac.h

Index: Source/core/rendering/RenderThemeChromiumMac.h
diff --git a/Source/core/rendering/RenderThemeChromiumMac.h b/Source/core/rendering/RenderThemeChromiumMac.h
index 0c950fa4741989fdb5a2f0e143892fbc4154694d..a7788242f9925d2708fbbcadbd47dcf75248a04f 100644
--- a/Source/core/rendering/RenderThemeChromiumMac.h
+++ b/Source/core/rendering/RenderThemeChromiumMac.h
@@ -59,7 +59,7 @@ public:
     virtual void platformColorsDidChange();
 
     // System fonts.
-    virtual void systemFont(int cssValueId, FontDescription&) const;
+    virtual void systemFont(CSSValueID, FontDescription&) const;
 
     virtual int minimumMenuListSize(RenderStyle*) const;
 
@@ -86,7 +86,7 @@ public:
     // Returns the duration of the animation for the progress bar.
     virtual double animationDurationForProgressBar(RenderProgress*) const;
 
-    virtual Color systemColor(int cssValueId) const;
+    virtual Color systemColor(CSSValueID) const;
 
 protected:
     RenderThemeChromiumMac();