libchrome: Several upstreamable fixes from libchrome

components/timers/alarm_timer_chromeos.cc

 // Copyright 2014 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 "components/timers/alarm_timer_chromeos.h"
 
 #include <stdint.h>
 #include <sys/timerfd.h>
 #include <utility>
 
@@ skipping 235 matching lines @@
   if (origin_task_runner_->RunsTasksOnCurrentThread()) {
     OnTimerFired(io_reset_sequence_number_);
   } else {
     origin_task_runner_->PostTask(
         FROM_HERE,
         base::Bind(&Delegate::OnTimerFired, scoped_refptr<Delegate>(this),
                    io_reset_sequence_number_));
   }
 }
 
-void AlarmTimer::Delegate::OnFileCanWriteWithoutBlocking(int fd) {
+void AlarmTimer::Delegate::OnFileCanWriteWithoutBlocking(int /*fd*/) {
   NOTREACHED();
 }
 
 void AlarmTimer::Delegate::SetTimerFiredCallbackForTest(
     base::Closure test_callback) {
   on_timer_fired_callback_for_test_ = test_callback;
 }
 
 void AlarmTimer::Delegate::ResetImpl(base::TimeDelta delay,
                                      int reset_sequence_number) {
@@ skipping 200 matching lines @@
 SimpleAlarmTimer::SimpleAlarmTimer(const tracked_objects::Location& posted_from,
                                    base::TimeDelta delay,
                                    const base::Closure& user_task)
     : AlarmTimer(posted_from, delay, user_task, false) {
 }
 
 SimpleAlarmTimer::~SimpleAlarmTimer() {
 }
 
 }  // namespace timers