SkLazyPtr suitable as a local or class member.

tests/OnceTest.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkOnce.h"
 #include "SkTaskGroup.h"
 #include "Test.h"
@@ skipping 13 matching lines @@
     SkOnce(&once, add_five, &x);
     SkOnce(&once, add_five, &x);
 
     REPORTER_ASSERT(r, 5 == x);
 }
 
 static void add_six(int* x) {
     *x += 6;
 }
 
+namespace {
+
 class Racer : public SkRunnable {
 public:
     SkOnceFlag* once;
     int* ptr;
 
     virtual void run() SK_OVERRIDE {
         SkOnce(once, add_six, ptr);
     }
 };
 
+}  // namespace
+
 DEF_TEST(SkOnce_Multithreaded, r) {
     const int kTasks = 16;
 
     // Make a bunch of tasks that will race to be the first to add six to x.
     Racer racers[kTasks];
     SK_DECLARE_STATIC_ONCE(once);
     int x = 0;
     for (int i = 0; i < kTasks; i++) {
         racers[i].once = &once;
         racers[i].ptr = &x;
@@ skipping 13 matching lines @@
 static int gX = 0;
 static void inc_gX() { gX++; }
 
 DEF_TEST(SkOnce_NoArg, r) {
     SK_DECLARE_STATIC_ONCE(once);
     SkOnce(&once, inc_gX);
     SkOnce(&once, inc_gX);
     SkOnce(&once, inc_gX);
     REPORTER_ASSERT(r, 1 == gX);
 }