Handle the case when the updates are disabled for a component.

components/update_client/action.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/update_client/action.h"
 
 #include <algorithm>
 #include <memory>
 
 #include "base/bind.h"
@@ skipping 109 matching lines @@
 void ActionImpl::UpdateCrx() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(!update_context_->queue.empty());
 
   const std::string& id = update_context_->queue.front();
   CrxUpdateItem* item = FindUpdateItemById(id);
   DCHECK(item);
 
   item->update_begin = base::TimeTicks::Now();
 
+  if (item->component.supports_group_policy_enable_component_updates &&
+      !update_context_->config->EnabledComponentUpdates()) {
+    item->error_category =
+        static_cast<int>(Action::ErrorCategory::kServiceError);
+    item->error_code =
+        static_cast<int>(Action::ServiceError::ERROR_UPDATE_DISABLED);
+    item->extra_code1 = 0;
+    ChangeItemState(item, CrxUpdateItem::State::kNoUpdate);
+
+    UpdateCrxComplete(item);
+    return;
+  }
+
   std::unique_ptr<Action> update_action(
       CanTryDiffUpdate(item, update_context_->config)
           ? ActionUpdateDiff::Create()
           : ActionUpdateFull::Create());
 
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(&Action::Run, base::Unretained(update_action.get()),
                             update_context_, callback_));
 
   update_context_->current_action.reset(update_action.release());
@@ skipping 33 matching lines @@
 }
 
 void ActionImpl::UpdateComplete(int error) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE,
                                                 base::Bind(callback_, error));
 }
 
 }  // namespace update_client