Port uses of SkLazyPtr to SkOncePtr.

src/fonts/SkRemotableFontMgr.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
+#include "SkOncePtr.h"
 #include "SkRemotableFontMgr.h"
 
-#include "SkLazyPtr.h"
-
 SkRemotableFontIdentitySet::SkRemotableFontIdentitySet(int count, SkFontIdentity** data)
       : fCount(count), fData(count)
 {
     SkASSERT(data);
     *data = fData;
 }
 
-// As a template argument, this must have external linkage.
-SkRemotableFontIdentitySet* sk_remotable_font_identity_set_new() {
-    return new SkRemotableFontIdentitySet;
+SK_DECLARE_STATIC_ONCE_PTR(SkRemotableFontIdentitySet, empty);
+SkRemotableFontIdentitySet* SkRemotableFontIdentitySet::NewEmpty() {
+    return SkRef(empty.get([]{ return new SkRemotableFontIdentitySet; }));
 }
-
-SK_DECLARE_STATIC_LAZY_PTR(SkRemotableFontIdentitySet, empty, sk_remotable_font_identity_set_new);
-SkRemotableFontIdentitySet* SkRemotableFontIdentitySet::NewEmpty() {
-    return SkRef(empty.get());
-}