Use base::OneShotTimer instead of base::Timer(false, false)

net/base/network_throttle_manager_impl.h

 // Copyright 2016 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 NET_BASE_NETWORK_THROTTLE_MANAGER_IMPL_H_
 #define NET_BASE_NETWORK_THROTTLE_MANAGER_IMPL_H_
 
 #include <list>
 #include <memory>
 #include <set>
@@ skipping 111 matching lines @@
 
   // base::Timer controlling outstanding request recomputation.
   //
   // This is started whenever it is not running and a new throttle is
   // added to |outstanding_throttles_|, and is never cleared except by
   // execution, which re-starts it if there are any
   // outstanding_throttles_.  So it should always be running if any
   // throttles are outstanding.  This guarantees that the class will
   // eventually detect aging out of outstanding throttles and unblock
   // throttles blocked on those outstanding throttles.
-  base::Timer outstanding_recomputation_timer_;
+  base::OneShotTimer outstanding_recomputation_timer_;
 
   // FIFO of OUTSTANDING throttles (ordered by time of entry into the
   // OUTSTANDING state).
   ThrottleList outstanding_throttles_;
 
   // FIFO list of BLOCKED throttles.  This is a list so that the
   // throttles can store iterators to themselves.
   ThrottleList blocked_throttles_;
 
   // For testing.
   std::unique_ptr<base::TickClock> tick_clock_;
 
   base::WeakPtrFactory<NetworkThrottleManagerImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkThrottleManagerImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_NETWORK_THROTTLE_MANAGER_IMPL_H_