Add support for uninstalling components and use it in SupervisedUserWhitelistInstaller.

chrome/browser/supervised_user/supervised_user_whitelist_service.cc

 // Copyright 2014 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 "chrome/browser/supervised_user/supervised_user_whitelist_service.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 256 matching lines @@
 void SupervisedUserWhitelistService::SetWhitelistProperties(
     base::DictionaryValue* dict,
     const sync_pb::ManagedUserWhitelistSpecifics& whitelist) {
   dict->SetString(kName, whitelist.name());
 }
 
 void SupervisedUserWhitelistService::RemoveWhitelist(
     base::DictionaryValue* pref_dict,
     const std::string& id) {
   pref_dict->RemoveWithoutPathExpansion(id, NULL);
-  installer_->UnregisterWhitelist(id);
+  installer_->UninstallWhitelist(id);
   UnloadWhitelist(id);
 }
 
 void SupervisedUserWhitelistService::RegisterWhitelist(const std::string& id,
                                                        const std::string& name,
                                                        bool new_installation) {
   bool result = registered_whitelists_.insert(id).second;
   DCHECK(result);
 
   installer_->RegisterWhitelist(
@@ skipping 41 matching lines @@
   UMA_HISTOGRAM_TIMES("ManagedUsers.Whitelist.TotalLoadDuration",
                       base::TimeTicks::Now() - start_time);
 
   // If the whitelist has been unregistered in the mean time, ignore it.
   if (registered_whitelists_.count(id) == 0u)
     return;
 
   loaded_whitelists_[id] = whitelist;
   NotifyWhitelistsChanged();
 }