Define EnabledComponentUpdates group policy for the component updater.

components/component_updater/component_updater_service_unittest.cc

 // Copyright 2015 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 "components/component_updater/component_updater_service.h"
 
 #include <limits>
 #include <string>
 #include <vector>
 
@@ skipping 268 matching lines @@
 
   ht.ExpectUniqueSample("ComponentUpdater.Calls", 1, 2);
   ht.ExpectUniqueSample("ComponentUpdater.UpdateCompleteResult", 0, 2);
   ht.ExpectTotalCount("ComponentUpdater.UpdateCompleteTime", 2);
 }
 
 // Tests that on-demand updates invoke UpdateClient::Install.
 TEST_F(ComponentUpdaterTest, OnDemandUpdate) {
   class LoopHandler {
    public:
-    LoopHandler(int max_cnt)
-        : max_cnt_(max_cnt) {}
+    LoopHandler(int max_cnt) : max_cnt_(max_cnt) {}
 
     void OnInstall(
         const std::string& ids,
         const UpdateClient::CrxDataCallback& crx_data_callback,
         const UpdateClient::CompletionCallback& completion_callback) {
       completion_callback.Run(0);
       static int cnt = 0;
       ++cnt;
       if (cnt >= max_cnt_) {
         base::ThreadTaskRunnerHandle::Get()->PostTask(
@@ skipping 99 matching lines @@
       base::Bind(&ComponentUpdaterTest::ReadyCallback));
 
   RunThreads();
 
   ht.ExpectUniqueSample("ComponentUpdater.Calls", 0, 1);
   ht.ExpectUniqueSample("ComponentUpdater.UpdateCompleteResult", 0, 1);
   ht.ExpectTotalCount("ComponentUpdater.UpdateCompleteTime", 1);
 }
 
 }  // namespace component_updater