Add onGetFamilyName to SkTypeface.

src/fonts/SkTestScalerContext.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkTestScalerContext_DEFINED
 #define SkTestScalerContext_DEFINED
 
@@ skipping 74 matching lines @@
 
     virtual int onCountGlyphs() const SK_OVERRIDE {
         return (int) fTestFont->fCharCodesCount;
     }
 
     virtual int onGetUPEM() const SK_OVERRIDE {
         SkASSERT(0);  // don't expect to get here
         return 1;
     }
 
+    virtual void onGetFamilyName(SkString* familyName) const SK_OVERRIDE;
     virtual SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const SK_OVERRIDE;
 
     virtual int onGetTableTags(SkFontTableTag tags[]) const SK_OVERRIDE {
         return 0;
     }
 
     virtual size_t onGetTableData(SkFontTableTag tag, size_t offset,
                                   size_t length, void* data) const SK_OVERRIDE {
         return 0;
     }
 private:
     SkTestFont* fTestFont;
     friend class SkTestScalerContext;
 };
 
 SkTypeface* CreateTestTypeface(const char* name, SkTypeface::Style style);
 
 #endif