Fix race on creating the default typeface.

include/core/SkTypeface.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkTypeface_DEFINED
@@ skipping 316 matching lines @@
     virtual bool onGetKerningPairAdjustments(const uint16_t glyphs[], int count,
                                              int32_t adjustments[]) const;
 
     virtual LocalizedStrings* onCreateFamilyNameIterator() const = 0;
 
     virtual int onGetTableTags(SkFontTableTag tags[]) const = 0;
     virtual size_t onGetTableData(SkFontTableTag, size_t offset,
                                   size_t length, void* data) const = 0;
 
 private:
+    static void create_default_typeface(Style style);
+
     SkFontID    fUniqueID;
     Style       fStyle;
     bool        fIsFixedPitch;
 
     friend class SkPaint;
     friend class SkGlyphCache;  // GetDefaultTypeface
     // just so deprecated fonthost can call protected methods
     friend class SkFontHost;
 
     typedef SkWeakRefCnt INHERITED;
 };
 
 #endif