Enforce pure virtual behavior for onMatchFamilyStyleCharacter

src/ports/SkFontHost_win.cpp

Index: src/ports/SkFontHost_win.cpp
diff --git a/src/ports/SkFontHost_win.cpp b/src/ports/SkFontHost_win.cpp
index a394f1fd6483f87aff426fd6a7dcabe27c2973fc..725c1f7a86cfb19fe3af9365fc578cdfee3a151f 100755
--- a/src/ports/SkFontHost_win.cpp
+++ b/src/ports/SkFontHost_win.cpp
@@ -2494,6 +2494,12 @@ protected:
         return sset->matchStyle(fontstyle);
     }
 
+    virtual SkTypeface* onMatchFamilyStyleCharacter(const char familyName[], const SkFontStyle&,
+                                                    const char* bcp47[], int bcp47Count,
+                                                    SkUnichar character) const SK_OVERRIDE {
+        return NULL;
+    }
+
     virtual SkTypeface* onMatchFaceStyle(const SkTypeface* familyMember,
                                          const SkFontStyle& fontstyle) const SK_OVERRIDE {
         // could be in base impl