Switch to standard integer types in components/, part 3 of 4.

components/scheduler/base/work_queue_sets_unittest.cc

 // Copyright 2015 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 "components/scheduler/base/work_queue_sets.h"
 
+#include <stddef.h>
+
 #include "components/scheduler/base/work_queue.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace scheduler {
 class TimeDomain;
 
 namespace internal {
 
 class WorkQueueSetsTest : public testing::Test {
  public:
@@ skipping 220 matching lines @@
   work_queue_sets_->AssignQueueToSet(work_queue, set);
   EXPECT_FALSE(work_queue_sets_->IsSetEmpty(set));
 
   work_queue->PopTaskForTest();
   work_queue_sets_->OnPopQueue(work_queue);
   EXPECT_TRUE(work_queue_sets_->IsSetEmpty(set));
 }
 
 }  // namespace internal
 }  // namespace scheduler