Introduce AfterStartupTaskUtils::Runner for callsites that want to use AfterStartupTaskUtils but ne…

chrome/browser/after_startup_task_utils.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 "chrome/browser/after_startup_task_utils.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/lazy_instance.h"
@@ skipping 174 matching lines @@
 #endif  // !defined(OS_ANDROID)
 
   BrowserThread::PostDelayedTask(BrowserThread::UI, FROM_HERE,
                                  base::Bind(&StartupObserver::OnFailsafeTimeout,
                                             weak_factory_.GetWeakPtr()),
                                  delay);
 }
 
 }  // namespace
 
+AfterStartupTaskUtils::Runner::Runner(
+    scoped_refptr<base::TaskRunner> destination_runner)
+    : destination_runner_(std::move(destination_runner)) {
+  DCHECK(destination_runner_);
+}
+
+AfterStartupTaskUtils::Runner::~Runner() = default;
+
+bool AfterStartupTaskUtils::Runner::PostDelayedTask(
+    const tracked_objects::Location& from_here,
+    const base::Closure& task,
+    base::TimeDelta delay) {
+  DCHECK(delay.is_zero());
+  AfterStartupTaskUtils::PostTask(from_here, destination_runner_, task);
+  return true;
+}
+
+bool AfterStartupTaskUtils::Runner::RunsTasksOnCurrentThread() const {
+  return destination_runner_->RunsTasksOnCurrentThread();
+}
+
 void AfterStartupTaskUtils::StartMonitoringStartup() {
   // The observer is self-deleting.
   (new StartupObserver)->Start();
 }
 
 void AfterStartupTaskUtils::PostTask(
     const tracked_objects::Location& from_here,
-    const scoped_refptr<base::TaskRunner>& task_runner,
+    const scoped_refptr<base::TaskRunner>& destination_runner,
     const base::Closure& task) {
   if (IsBrowserStartupComplete()) {
-    task_runner->PostTask(from_here, task);
+    destination_runner->PostTask(from_here, task);
     return;
   }
 
   std::unique_ptr<AfterStartupTask> queued_task(
-      new AfterStartupTask(from_here, task_runner, task));
+      new AfterStartupTask(from_here, destination_runner, task));
   QueueTask(std::move(queued_task));
 }
 
 void AfterStartupTaskUtils::SetBrowserStartupIsCompleteForTesting() {
   ::SetBrowserStartupIsComplete();
 }
 
 void AfterStartupTaskUtils::SetBrowserStartupIsComplete() {
   ::SetBrowserStartupIsComplete();
 }
 
 bool AfterStartupTaskUtils::IsBrowserStartupComplete() {
   return ::IsBrowserStartupComplete();
 }
 
 void AfterStartupTaskUtils::UnsafeResetForTesting() {
   DCHECK(g_after_startup_tasks.Get().empty());
   if (!IsBrowserStartupComplete())
     return;
   g_startup_complete_flag.Get().UnsafeResetForTesting();
   DCHECK(!IsBrowserStartupComplete());
 }