Replace more ObserverList with base::ObserverList.

components/policy/core/common/policy_service_impl.h

 // 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.
 
 #ifndef COMPONENTS_POLICY_CORE_COMMON_POLICY_SERVICE_IMPL_H_
 #define COMPONENTS_POLICY_CORE_COMMON_POLICY_SERVICE_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 30 matching lines @@
   // PolicyService overrides:
   void AddObserver(PolicyDomain domain,
                    PolicyService::Observer* observer) override;
   void RemoveObserver(PolicyDomain domain,
                       PolicyService::Observer* observer) override;
   const PolicyMap& GetPolicies(const PolicyNamespace& ns) const override;
   bool IsInitializationComplete(PolicyDomain domain) const override;
   void RefreshPolicies(const base::Closure& callback) override;
 
  private:
-  typedef ObserverList<PolicyService::Observer, true> Observers;
+  typedef base::ObserverList<PolicyService::Observer, true> Observers;
   typedef std::map<PolicyDomain, Observers*> ObserverMap;
 
   // ConfigurationPolicyProvider::Observer overrides:
   void OnUpdatePolicy(ConfigurationPolicyProvider* provider) override;
 
   // Posts a task to notify observers of |ns| that its policies have changed,
   // passing along the |previous| and the |current| policies.
   void NotifyNamespaceUpdated(const PolicyNamespace& ns,
                               const PolicyMap& previous,
                               const PolicyMap& current);
@@ skipping 35 matching lines @@
   // Used to create tasks to delay new policy updates while we may be already
   // processing previous policy updates.
   base::WeakPtrFactory<PolicyServiceImpl> update_task_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PolicyServiceImpl);
 };
 
 }  // namespace policy
 
 #endif  // COMPONENTS_POLICY_CORE_COMMON_POLICY_SERVICE_IMPL_H_