21   PolicyMapType::const_iterator entry = map_.find(policy);  in Get()
22   return entry == map_.end() ? NULL : entry->second;  in Get()
26   std::swap(map_[policy], value);  in Set()
31   const const_iterator entry = map_.find(policy);  in Erase()
32   if (entry != map_.end()) {  in Erase()
34     map_.erase(entry->first);  in Erase()
39   map_.swap(other->map_);  in Swap()
43   return other.map_.size() == map_.size() &&  in Equals()
44       std::equal(map_.begin(), map_.end(), other.map_.begin(), MapEntryEquals);  in Equals()
48   return map_.empty();  in empty()
52   return map_.size();  in size()
56   return map_.begin();  in begin()
60   return map_.end();  in end()
64   STLDeleteValues(&map_);  in Clear()