Fix compilation with SK_ENABLE_INST_COUNT=1

include/ports/SkFontConfigInterface.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkFontConfigInterface_DEFINED
 #define SkFontConfigInterface_DEFINED
 
@@ skipping 88 matching lines @@
     static SkFontConfigInterface* GetSingletonDirectInterface();
 
     // New APIS, which have default impls for now (which do nothing)
 
     virtual SkDataTable* getFamilyNames() { return SkDataTable::NewEmpty(); }
     virtual bool matchFamilySet(const char inFamilyName[],
                                 SkString* outFamilyName,
                                 SkTArray<FontIdentity>*) {
         return false;
     }
+    typedef SkRefCnt INHERITED;
 };
 
 #endif