Add a using declaration for Timer::Start in BaseTimerMethodPointer.

base/timer.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.
 
 // OneShotTimer and RepeatingTimer provide a simple timer API.  As the names
 // suggest, OneShotTimer calls you back once after a time delay expires.
 // RepeatingTimer on the other hand calls you back periodically with the
 // prescribed time interval.
 //
 // OneShotTimer and RepeatingTimer both cancel the timer when they go out of
@@ skipping 166 matching lines @@
 };
 
 //-----------------------------------------------------------------------------
 // This class is an implementation detail of OneShotTimer and RepeatingTimer.
 // Please do not use this class directly.
 template <class Receiver, bool kIsRepeating>
 class BaseTimerMethodPointer : public Timer {
  public:
   typedef void (Receiver::*ReceiverMethod)();
 
+  // This is here to work around the fact that Timer::Start is "hidden" by the
+  // Start definition below, rather than being overloaded.
+  // TODO(tim): We should remove uses of BaseTimerMethodPointer::Start below
+  // and convert callers to use the base::Closure version in Timer::Start,
+  // see bug 148832.
+  using Timer::Start;
+
   BaseTimerMethodPointer() : Timer(kIsRepeating, kIsRepeating) {}
 
   // Start the timer to run at the given |delay| from now. If the timer is
   // already running, it will be replaced to call a task formed from
   // |reviewer->*method|.
   void Start(const tracked_objects::Location& posted_from,
              TimeDelta delay,
              Receiver* receiver,
              ReceiverMethod method) {
     Timer::Start(posted_from, delay,
@@ skipping 34 matching lines @@
       : Timer(posted_from, delay,
               base::Bind(method, base::Unretained(receiver)),
               false) {}
 
   void Reset() { Timer::Reset(); }
 };
 
 }  // namespace base
 
 #endif  // BASE_TIMER_H_