Move distance field generation to the glyph cache

include/gpu/GrFontScaler.h

Index: include/gpu/GrFontScaler.h
diff --git a/include/gpu/GrFontScaler.h b/include/gpu/GrFontScaler.h
index d307cabb429e056db99dfe54e3df628e5dc8549e..342ac3a3d6724fe1244a4c496a96e372e6c74396 100644
--- a/include/gpu/GrFontScaler.h
+++ b/include/gpu/GrFontScaler.h
@@ -29,6 +29,10 @@ public:
     virtual bool getPackedGlyphBounds(GrGlyph::PackedID, SkIRect* bounds) = 0;
     virtual bool getPackedGlyphImage(GrGlyph::PackedID, int width, int height,
                                      int rowBytes, void* image) = 0;
+    // distance field support
+    virtual bool getPackedGlyphDFBounds(GrGlyph::PackedID, SkIRect* bounds) = 0;
+    virtual bool getPackedGlyphDFImage(GrGlyph::PackedID, int width, int height,

[reed1, 2014/04/14 14:18:05]

What does this guy return? Does it set dfImage to point to the pixels? Does it
copy the pixels?

[jvanverth1, 2014/04/14 17:58:42]

It generates distance field pixels from the image pixels, stores it in the
cache, and returns a pointer to the distance field pixels.

+                                       int rowBytes, void* dfImage) = 0;
     virtual bool getGlyphPath(uint16_t glyphID, SkPath*) = 0;
 
 private: