Remove lock from TaskQueueImpl::RunsTasksOnCurrentThread

third_party/WebKit/Source/platform/scheduler/base/task_queue_impl.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 "platform/scheduler/base/task_queue_impl.h"
 
 #include "base/format_macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/blame_context.h"
@@ skipping 165 matching lines @@
 
   any_thread().task_queue_manager = nullptr;
   main_thread_only().task_queue_manager = nullptr;
   main_thread_only().delayed_incoming_queue = std::priority_queue<Task>();
   any_thread().immediate_incoming_queue.clear();
   main_thread_only().immediate_work_queue.reset();
   main_thread_only().delayed_work_queue.reset();
 }
 
 bool TaskQueueImpl::RunsTasksOnCurrentThread() const {
-  base::AutoLock lock(any_thread_lock_);
   return base::PlatformThread::CurrentId() == thread_id_;
 }
 
 bool TaskQueueImpl::PostDelayedTask(const tracked_objects::Location& from_here,
                                     const base::Closure& task,
                                     base::TimeDelta delay) {
   if (delay.is_zero())
     return PostImmediateTaskImpl(from_here, task, TaskType::NORMAL);
 
   return PostDelayedTaskImpl(from_here, task, delay, TaskType::NORMAL);
@@ skipping 635 matching lines @@
           const_cast<Task&>(main_thread_only().delayed_incoming_queue.top())));
     }
     main_thread_only().delayed_incoming_queue.pop();
   }
   main_thread_only().delayed_incoming_queue = std::move(remaining_tasks);
 }
 
 }  // namespace internal
 }  // namespace scheduler
 }  // namespace blink