Update from https://crrev.com/320343

base/threading/sequenced_worker_pool_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/sequenced_worker_pool.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 36 matching lines @@
       while (unblock_counter_ == 0)
         cond_var_.Wait();
       unblock_counter_--;
     }
     cond_var_.Signal();
   }
 
   void Unblock(size_t count) {
     {
       base::AutoLock lock(lock_);
-      DCHECK(unblock_counter_ == 0);
+      DCHECK_EQ(unblock_counter_, 0u);
       unblock_counter_ = count;
     }
     cond_var_.Signal();
   }
 
  private:
   base::Lock lock_;
   base::ConditionVariable cond_var_;
 
   size_t unblock_counter_;
@@ skipping 887 matching lines @@
     SequencedWorkerPoolSequencedTaskRunner, TaskRunnerTest,
     SequencedWorkerPoolSequencedTaskRunnerTestDelegate);
 
 INSTANTIATE_TYPED_TEST_CASE_P(
     SequencedWorkerPoolSequencedTaskRunner, SequencedTaskRunnerTest,
     SequencedWorkerPoolSequencedTaskRunnerTestDelegate);
 
 }  // namespace
 
 }  // namespace base