start a wrapper for color fonts

include/core/SkTypeface.h

Index: include/core/SkTypeface.h
diff --git a/include/core/SkTypeface.h b/include/core/SkTypeface.h
index c91fa428faa1a08a8a35e87040243dd20e1aaf14..070a00fb787693ebd8915becafd0100d6685364c 100644
--- a/include/core/SkTypeface.h
+++ b/include/core/SkTypeface.h
@@ -203,6 +203,14 @@ public:
     SkStream* openStream(int* ttcIndex) const;
     SkScalerContext* createScalerContext(const SkDescriptor*) const;
 
+    // for proxy
+    void filterRec(SkScalerContextRec* rec) const {

[bungeman-skia, 2013/05/29 21:21:14]

Do these two want to be public? I shudder at exposing even the name
ScalerContext, let alone SkScalerContextRec.

[reed1, 2013/05/30 16:04:29]

I don't know how else to allow one typeface to call another w/o expose these. I
am very open to suggestions for an alternate mechanism.

+        this->onFilterRec(rec);
+    }
+    void getFontDescriptor(SkFontDescriptor* desc, bool* isLocal) const {
+        this->onGetFontDescriptor(desc, isLocal);
+    }
+
 protected:
     /** uniqueID must be unique and non-zero
     */