adapt FontConfig to use SK_FONTHOST_USES_FONTMGR

src/fonts/SkFontMgr_fontconfig.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkFontMgr.h"
 #include "SkFontStyle.h"
 #include "SkFontConfigInterface.h"
+#include "SkFontConfigTypeface.h"
 #include "SkMath.h"
 #include "SkString.h"
 #include "SkTDArray.h"
 
 // for now we pull these in directly. eventually we will solely rely on the
 // SkFontConfigInterface instance.
 #include <fontconfig/fontconfig.h>
 #include <unistd.h>
 
 // borrow this global from SkFontHost_fontconfig. eventually that file should
@@ skipping 239 matching lines @@
     virtual SkTypeface* onMatchFaceStyle(const SkTypeface*,
                                          const SkFontStyle&) { return NULL; }
 
     virtual SkTypeface* onCreateFromData(SkData*, int ttcIndex) { return NULL; }
     virtual SkTypeface* onCreateFromStream(SkStream*, int ttcIndex) {
         return NULL;
     }
     virtual SkTypeface* onCreateFromFile(const char path[], int ttcIndex) {
         return NULL;
     }
+    
+    virtual SkTypeface* onLegacyCreateTypeface(const char familyName[],
+                                               unsigned styleBits) SK_OVERRIDE {
+        return FontConfigTypeface::LegacyCreateTypeface(NULL, familyName,
+                                                  (SkTypeface::Style)styleBits);
+    }
 };
 
 SkFontMgr* SkFontMgr::Factory() {
     SkFontConfigInterface* fci = RefFCI();
     return fci ? SkNEW_ARGS(SkFontMgr_fontconfig, (fci)) : NULL;
 }