Hook in rough distance field support for fonts

src/gpu/GrTextStrike.h

Index: src/gpu/GrTextStrike.h
diff --git a/src/gpu/GrTextStrike.h b/src/gpu/GrTextStrike.h
index 3917d3775dbe1a39b6a5da0d3629273723b6c063..ba987ddd264b6a1a485a2fc5f6ad922ba3b214b8 100644
--- a/src/gpu/GrTextStrike.h
+++ b/src/gpu/GrTextStrike.h
@@ -62,9 +62,10 @@ private:
 
     GrFontCache*    fFontCache;
     GrAtlasMgr*     fAtlasMgr;
-    GrAtlas         fAtlas;
-
     GrMaskFormat    fMaskFormat;
+    bool            fUseDistanceField;
+
+    GrAtlas         fAtlas;
 
     GrGlyph* generateGlyph(GrGlyph::PackedID packed, GrFontScaler* scaler);
 
@@ -76,7 +77,7 @@ public:
     GrFontCache(GrGpu*);
     ~GrFontCache();
 
-    inline GrTextStrike* getStrike(GrFontScaler*);
+    inline GrTextStrike* getStrike(GrFontScaler*, bool useDistanceField);
 
     void freeAll();