Start canonicalizing color for all A8 textblobs

include/core/SkTextBlob.h

Index: include/core/SkTextBlob.h
diff --git a/include/core/SkTextBlob.h b/include/core/SkTextBlob.h
index a091f05f5f5854bbacaf79d1af12ce88048fdd06..f8e5bc3f76ccb69d4b2ac9b34093f32d0bf71abc 100644
--- a/include/core/SkTextBlob.h
+++ b/include/core/SkTextBlob.h
@@ -68,6 +68,7 @@ private:
         const SkPoint& offset() const;
         void applyFontToPaint(SkPaint*) const;
         GlyphPositioning positioning() const;
+        uint32_t flags() const;

[reed1, 2015/04/13 17:05:51]

I'm nervous about an API that promises to return "paint" flags per-run, as we
certainly hope in the future to not store so much. Can we get away with a more
narrow, semantic getter, like isLCD() or return an enum for AA-type (e.g. BW,
A8, LCD)?

 
     private:
         const RunRecord* fCurrentRun;