Switch ObserverList::size() to ObserverList::might_have_observers() Pt.1

chromeos/dbus/shill_manager_client_stub.cc

 // Copyright (c) 2013 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 "chromeos/dbus/shill_manager_client_stub.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/values.h"
@@ skipping 505 matching lines @@
 void ShillManagerClientStub::PassStubGeoNetworks(
     const DictionaryValueCallback& callback) const {
   callback.Run(DBUS_METHOD_CALL_SUCCESS, stub_geo_networks_);
 }
 
 void ShillManagerClientStub::CallNotifyObserversPropertyChanged(
     const std::string& property,
     int delay_ms) {
   // Avoid unnecessary delayed task if we have no observers (e.g. during
   // initial setup).
-  if (observer_list_.size() == 0)
+  if (!observer_list_.might_have_observers())
     return;
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
           chromeos::switches::kEnableStubInteractive)) {
     delay_ms = 0;
   }
   base::MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&ShillManagerClientStub::NotifyObserversPropertyChanged,
                  weak_ptr_factory_.GetWeakPtr(),
                  property),
@@ skipping 102 matching lines @@
                           flimflam::kScanningProperty,
                           base::FundamentalValue(false));
   }
   CallNotifyObserversPropertyChanged(flimflam::kServicesProperty, 0);
   CallNotifyObserversPropertyChanged(flimflam::kServiceWatchListProperty,
                                      0);
   base::MessageLoop::current()->PostTask(FROM_HERE, callback);
 }
 
 }  // namespace chromeos