extend FontConfigInterface to start to match new fontmgr design

trunk/include/ports/SkFontConfigInterface.h

Index: trunk/include/ports/SkFontConfigInterface.h
===================================================================
--- trunk/include/ports/SkFontConfigInterface.h	(revision 8444)
+++ trunk/include/ports/SkFontConfigInterface.h	(working copy)
@@ -81,6 +81,20 @@
      *  libfontconfig. This does not affect the refcnt of the returned instance.
      */
     static SkFontConfigInterface* GetSingletonDirectInterface();
+
+    // New APIS, which have default impls for now (which do nothing)
+
+    struct Style {

[bungeman-skia, 2013/03/29 19:40:36]

Should the style also contain a FontIdentity? Then you would have an opaque
thing to pass back to get that specific font.

[reed1, 2013/03/29 20:11:58]

Done via matchFamilyStyle()

+        int fWeight;
+        int fWidth;
+        int fSlant;
+    };
+
+    virtual int countFamilies();
+    virtual int getFamilySet(int index, SkString* outFamilyName,
+                             Style style[], int maxCount);
+    virtual int matchFamilySet(const char familyName[], SkString* outFamilyName,
+                               Style styles[], int maxCount);
 };
 
 #endif