57     std::lock_guard<std::mutex> lock(lock_);  in Run()  local
63       std::lock_guard<std::mutex> lock(lock_);  in Run()  local
99   std::lock_guard<std::mutex> lock(lock_);  in Quit()  local
105   std::lock_guard<std::mutex> lock(lock_);  in QuitCalled()  local
110   std::lock_guard<std::mutex> lock(lock_);  in IsIdleForTesting()  local
115   std::lock_guard<std::mutex> lock(lock_);  in AdvanceTimeForTesting()  local
146     std::lock_guard<std::mutex> lock(lock_);  in RunImmediateAndDelayedTask()  local
220     std::lock_guard<std::mutex> lock(lock_);  in RunFileDescriptorWatch()  local
263     std::lock_guard<std::mutex> lock(lock_);  in PostTask()  local
275     std::lock_guard<std::mutex> lock(lock_);  in PostDelayedTask()  local
286     std::lock_guard<std::mutex> lock(lock_);  in AddFileDescriptorWatch()  local
303     std::lock_guard<std::mutex> lock(lock_);  in RemoveFileDescriptorWatch()  local