Use function-ptr instead of SkFontHost api to allow client to handle

src/ports/SkFontHost_sandbox_none.cpp

Index: src/ports/SkFontHost_sandbox_none.cpp
===================================================================
--- src/ports/SkFontHost_sandbox_none.cpp	(revision 8299)
+++ src/ports/SkFontHost_sandbox_none.cpp	(working copy)
@@ -1,14 +0,0 @@
-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkFontHost.h"
-#include "SkTypeface.h"
-
-//static
-void SkFontHost::EnsureTypefaceAccessible(const SkTypeface&) {
-    //No sandbox, nothing to do.
-}