components: Use stl utilities from the base namespace

components/proximity_auth/bluetooth_throttler_impl.cc

 // Copyright 2015 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/proximity_auth/bluetooth_throttler_impl.h"
 
 #include <utility>
 
 #include "base/stl_util.h"
 #include "base/time/tick_clock.h"
@@ skipping 24 matching lines @@
   base::TimeTicks now = clock_->NowTicks();
   base::TimeTicks throttled_start_time =
       last_disconnect_time_ + GetCooldownTimeDelta();
   if (now >= throttled_start_time)
     return base::TimeDelta();
 
   return throttled_start_time - now;
 }
 
 void BluetoothThrottlerImpl::OnConnection(Connection* connection) {
-  DCHECK(!ContainsKey(connections_, connection));
+  DCHECK(!base::ContainsKey(connections_, connection));
   connections_.insert(connection);
   connection->AddObserver(this);
 }
 
 base::TimeDelta BluetoothThrottlerImpl::GetCooldownTimeDelta() const {
   return base::TimeDelta::FromSeconds(kCooldownTimeSecs);
 }
 
 void BluetoothThrottlerImpl::OnConnectionStatusChanged(
     Connection* connection,
     Connection::Status old_status,
     Connection::Status new_status) {
-  DCHECK(ContainsKey(connections_, connection));
+  DCHECK(base::ContainsKey(connections_, connection));
   if (new_status == Connection::DISCONNECTED) {
     last_disconnect_time_ = clock_->NowTicks();
     connection->RemoveObserver(this);
     connections_.erase(connection);
   }
 }
 
 }  // namespace proximity_auth