ObserverList::HasObserver now takes a const pointer.

chromeos/dbus/power_manager_client.cc

 // Copyright (c) 2012 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/power_manager_client.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 60 matching lines @@
 
   virtual void AddObserver(Observer* observer) override {
     CHECK(observer);  // http://crbug.com/119976
     observers_.AddObserver(observer);
   }
 
   virtual void RemoveObserver(Observer* observer) override {
     observers_.RemoveObserver(observer);
   }
 
-  virtual bool HasObserver(Observer* observer) override {
+  virtual bool HasObserver(const Observer* observer) const override {
     return observers_.HasObserver(observer);
   }
 
   virtual void DecreaseScreenBrightness(bool allow_off) override {
     dbus::MethodCall method_call(
         power_manager::kPowerManagerInterface,
         power_manager::kDecreaseScreenBrightnessMethod);
     dbus::MessageWriter writer(&method_call);
     writer.AppendBool(allow_off);
     power_manager_proxy_->CallMethod(
@@ skipping 681 matching lines @@
   }
 
   virtual void AddObserver(Observer* observer) override {
     observers_.AddObserver(observer);
   }
 
   virtual void RemoveObserver(Observer* observer) override {
     observers_.RemoveObserver(observer);
   }
 
-  virtual bool HasObserver(Observer* observer) override {
+  virtual bool HasObserver(const Observer* observer) const override {
     return observers_.HasObserver(observer);
   }
 
   virtual void DecreaseScreenBrightness(bool allow_off) override {
     VLOG(1) << "Requested to descrease screen brightness";
     SetBrightness(brightness_ - 5.0, true);
   }
 
   virtual void IncreaseScreenBrightness() override {
     VLOG(1) << "Requested to increase screen brightness";
@@ skipping 176 matching lines @@
 // static
 PowerManagerClient* PowerManagerClient::Create(
     DBusClientImplementationType type) {
   if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
     return new PowerManagerClientImpl();
   DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
   return new PowerManagerClientStubImpl();
 }
 
 }  // namespace chromeos