Delta from the first fix.

chrome/browser/extensions/api/alarms/alarm_manager.cc

Index: chrome/browser/extensions/api/alarms/alarm_manager.cc
diff --git a/chrome/browser/extensions/api/alarms/alarm_manager.cc b/chrome/browser/extensions/api/alarms/alarm_manager.cc
index cb8883bcea23304d01256cb0016193ea548a7b8b..aa483ee9363e160ee2011a141b2f97e8ac6f8d22 100644
--- a/chrome/browser/extensions/api/alarms/alarm_manager.cc
+++ b/chrome/browser/extensions/api/alarms/alarm_manager.cc
@@ -336,7 +336,7 @@ void AlarmManager::ScheduleNextPoll() {
     next_poll = soonest_alarm_time;
 
   // Schedule the poll.
-  next_poll_time_ = next_poll;
+  test_next_poll_time_ = next_poll;
   base::TimeDelta delay = std::max(base::TimeDelta::FromSeconds(0),
                                    next_poll - clock_->Now());
   timer_.Start(FROM_HERE,
@@ -362,7 +362,7 @@ void AlarmManager::PollAlarms() {
     for (size_t i = cur_extension->second.size(); i > 0; --i) {
       AlarmList::iterator cur_alarm = cur_extension->second.begin() + i - 1;
       if (base::Time::FromJsTime(cur_alarm->js_alarm->scheduled_time) <=
-          next_poll_time_) {
+          last_poll_time_) {
         OnAlarm(make_pair(cur_extension, cur_alarm));
       }
     }