Modified PolicyService to register observers by domain only, instead of domain and component.

chrome/browser/policy/policy_service_stub.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 CHROME_BROWSER_POLICY_POLICY_SERVICE_STUB_H_
 #define CHROME_BROWSER_POLICY_POLICY_SERVICE_STUB_H_
 
 #include "base/basictypes.h"
 #include "chrome/browser/policy/policy_map.h"
 #include "chrome/browser/policy/policy_service.h"
 
 namespace policy {
 
 // A stub implementation, that is used when ENABLE_CONFIGURATION_POLICY is not
 // set. This allows client code to compile without requiring #ifdefs.
 class PolicyServiceStub : public PolicyService {
  public:
   PolicyServiceStub();
   virtual ~PolicyServiceStub();
 
   virtual void AddObserver(PolicyDomain domain,
-                           const std::string& component_id,
                            Observer* observer) OVERRIDE;
 
   virtual void RemoveObserver(PolicyDomain domain,
-                              const std::string& component_id,
                               Observer* observer) OVERRIDE;
 
   virtual const PolicyMap& GetPolicies(
       PolicyDomain domain,
       const std::string& component_id) const OVERRIDE;
 
   virtual bool IsInitializationComplete() const OVERRIDE;
 
   virtual void RefreshPolicies(const base::Closure& callback) OVERRIDE;
  private:
   const PolicyMap kEmpty_;
 
   DISALLOW_COPY_AND_ASSIGN(PolicyServiceStub);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_POLICY_SERVICE_STUB_H_