Make ThreadChecker::CalledOnValidThread() return true when called from the same task.

base/threading/thread_checker.h

 // 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.
 
 #ifndef BASE_THREADING_THREAD_CHECKER_H_
 #define BASE_THREADING_THREAD_CHECKER_H_
 
 #include "base/logging.h"
 #include "base/threading/thread_checker_impl.h"
 
@@ skipping 39 matching lines @@
 //   }
 //
 //  private:
 //   ThreadChecker thread_checker_;
 // }
 //
 // Note that, when enabled, CalledOnValidThread() returns false when called from
 // tasks posted to SingleThreadTaskRunners bound to different sequences, even if
 // the tasks happen to run on the same thread (e.g. two independent TaskRunners
 // with ExecutionMode::SINGLE_THREADED on the TaskScheduler that happen to share
-// a thread). Also, CalledOnValidThread() returns false when called from a non-
-// single-threaded task which is associated with a SequenceToken (e.g. a task
-// posted with ExecutionMode::SEQUENCED to the TaskScheduler).
+// a thread).
 //
 // In Release mode, CalledOnValidThread will always return true.
 #if DCHECK_IS_ON()
 class ThreadChecker : public ThreadCheckerImpl {
 };
 #else
 class ThreadChecker : public ThreadCheckerDoNothing {
 };
 #endif  // DCHECK_IS_ON()
 
 }  // namespace base
 
 #endif  // BASE_THREADING_THREAD_CHECKER_H_