add matcher to fontstyleset

include/ports/SkFontMgr.h

Index: include/ports/SkFontMgr.h
===================================================================
--- include/ports/SkFontMgr.h	(revision 8442)
+++ include/ports/SkFontMgr.h	(working copy)
@@ -20,6 +20,9 @@
     virtual int count() = 0;
     virtual void getStyle(int index, SkFontStyle*, SkString* style) = 0;
     virtual SkTypeface* createTypeface(int index) = 0;
+    virtual SkTypeface* matchStyle(const SkFontStyle& pattern) = 0;
+
+    static SkFontStyleSet* CreateEmpty();
 };
 
 class SkFontMgr : public SkRefCnt {
@@ -28,6 +31,8 @@
     void getFamilyName(int index, SkString* familyName);
     SkFontStyleSet* createStyleSet(int index);
 
+    SkFontStyleSet* matchFamily(const char familyName[]);
+
     /**
      *  Find the closest matching typeface to the specified familyName and style
      *  and return a ref to it. The caller must call unref() on the returned
@@ -71,6 +76,8 @@
     virtual void onGetFamilyName(int index, SkString* familyName) = 0;
     virtual SkFontStyleSet* onCreateStyleSet(int index) = 0;
 
+    virtual SkFontStyleSet* onMatchFamily(const char familyName[]) = 0;
+
     virtual SkTypeface* onMatchFamilyStyle(const char familyName[],
                                            const SkFontStyle&) = 0;
     virtual SkTypeface* onMatchFaceStyle(const SkTypeface*,