Fix implicit access to raw pointer of scoped_refptr.

base/threading/thread_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/threading/thread.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 273 matching lines @@
 
   // Check the order of events during shutdown.
   ASSERT_EQ(static_cast<size_t>(THREAD_NUM_EVENTS), captured_events.size());
   EXPECT_EQ(THREAD_EVENT_INIT, captured_events[0]);
   EXPECT_EQ(THREAD_EVENT_CLEANUP, captured_events[1]);
   EXPECT_EQ(THREAD_EVENT_MESSAGE_LOOP_DESTROYED, captured_events[2]);
 }
 
 TEST_F(ThreadTest, ThreadNotStarted) {
   Thread a("Inert");
-  EXPECT_EQ(nullptr, a.task_runner());
+  EXPECT_FALSE(a.task_runner());
 }
 
 TEST_F(ThreadTest, MultipleWaitUntilThreadStarted) {
   Thread a("MultipleWaitUntilThreadStarted");
   EXPECT_TRUE(a.Start());
   // It's OK to call WaitUntilThreadStarted() multiple times.
   EXPECT_TRUE(a.WaitUntilThreadStarted());
   EXPECT_TRUE(a.WaitUntilThreadStarted());
 }