Remove usage of SequencedWorkerPool::GetNamedSequenceToken from net/extras/sqlite/.

net/extras/sqlite/sqlite_persistent_cookie_store_perftest.cc

 // 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.
 
 #include "net/extras/sqlite/sqlite_persistent_cookie_store.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/files/scoped_temp_dir.h"
-#include "base/message_loop/message_loop.h"
 #include "base/sequenced_task_runner.h"
 #include "base/strings/stringprintf.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/task_scheduler/post_task.h"
 #include "base/test/perf_time_logger.h"
-#include "base/test/sequenced_worker_pool_owner.h"
-#include "base/threading/sequenced_worker_pool.h"
+#include "base/test/scoped_task_environment.h"
 #include "net/cookies/canonical_cookie.h"
 #include "net/cookies/cookie_constants.h"
 #include "net/extras/sqlite/cookie_crypto_delegate.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 namespace net {
 
 namespace {
 
 const base::FilePath::CharType cookie_filename[] = FILE_PATH_LITERAL("Cookies");
 
 }  // namespace
 
 class SQLitePersistentCookieStorePerfTest : public testing::Test {
  public:
   SQLitePersistentCookieStorePerfTest()
-      : pool_owner_(new base::SequencedWorkerPoolOwner(2, "SetupPool")),
-        loaded_event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
+      : loaded_event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
                       base::WaitableEvent::InitialState::NOT_SIGNALED),
         key_loaded_event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
                           base::WaitableEvent::InitialState::NOT_SIGNALED) {}
 
   void OnLoaded(std::vector<std::unique_ptr<CanonicalCookie>> cookies) {
     cookies_.swap(cookies);
     loaded_event_.Signal();
   }
 
   void OnKeyLoaded(std::vector<std::unique_ptr<CanonicalCookie>> cookies) {
     cookies_.swap(cookies);
     key_loaded_event_.Signal();
   }
 
   void Load() {
     store_->Load(base::Bind(&SQLitePersistentCookieStorePerfTest::OnLoaded,
                             base::Unretained(this)));
     loaded_event_.Wait();
   }
 
-  scoped_refptr<base::SequencedTaskRunner> background_task_runner() {
-    return pool_owner_->pool()->GetSequencedTaskRunner(
-        pool_owner_->pool()->GetNamedSequenceToken("background"));
-  }
-
-  scoped_refptr<base::SequencedTaskRunner> client_task_runner() {
-    return pool_owner_->pool()->GetSequencedTaskRunner(
-        pool_owner_->pool()->GetNamedSequenceToken("client"));
-  }
-
   void SetUp() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     store_ = new SQLitePersistentCookieStore(
-        temp_dir_.GetPath().Append(cookie_filename), client_task_runner(),
-        background_task_runner(), false, NULL);
+        temp_dir_.GetPath().Append(cookie_filename), client_task_runner_,
+        background_task_runner_, false, NULL);
     std::vector<CanonicalCookie*> cookies;
     Load();
     ASSERT_EQ(0u, cookies_.size());
     // Creates 15000 cookies from 300 eTLD+1s.
     base::Time t = base::Time::Now();
     for (int domain_num = 0; domain_num < 300; domain_num++) {
       std::string domain_name(base::StringPrintf(".domain_%d.com", domain_num));
       for (int cookie_num = 0; cookie_num < 50; ++cookie_num) {
         t += base::TimeDelta::FromInternalValue(10);
         store_->AddCookie(CanonicalCookie(
             base::StringPrintf("Cookie_%d", cookie_num), "1", domain_name, "/",
             t, t, t, false, false, CookieSameSite::DEFAULT_MODE,
             COOKIE_PRIORITY_DEFAULT));
       }
     }
     // Replace the store effectively destroying the current one and forcing it
     // to write its data to disk.
     store_ = NULL;
 
-    // Shut down the pool, causing deferred (no-op) commits to be discarded.
-    pool_owner_->pool()->Shutdown();
-    // ~SequencedWorkerPoolOwner blocks on pool shutdown.
-    pool_owner_.reset(new base::SequencedWorkerPoolOwner(2, "TestPool"));
+    // Flush TaskScheduler tasks, causing pending commits to run.
+    scoped_task_environment_.RunUntilIdle();
 
     store_ = new SQLitePersistentCookieStore(
-        temp_dir_.GetPath().Append(cookie_filename), client_task_runner(),
-        background_task_runner(), false, NULL);
+        temp_dir_.GetPath().Append(cookie_filename), client_task_runner_,
+        background_task_runner_, false, NULL);
   }
 
   void TearDown() override {
     store_ = NULL;
   }
 
  protected:
-  base::MessageLoop main_loop_;
-  std::unique_ptr<base::SequencedWorkerPoolOwner> pool_owner_;
+  base::test::ScopedTaskEnvironment scoped_task_environment_;
+  const scoped_refptr<base::SequencedTaskRunner> background_task_runner_ =
+      base::CreateSequencedTaskRunnerWithTraits({base::MayBlock()});
+  const scoped_refptr<base::SequencedTaskRunner> client_task_runner_ =
+      base::CreateSequencedTaskRunnerWithTraits({base::MayBlock()});
   base::WaitableEvent loaded_event_;
   base::WaitableEvent key_loaded_event_;
   std::vector<std::unique_ptr<CanonicalCookie>> cookies_;
   base::ScopedTempDir temp_dir_;
   scoped_refptr<SQLitePersistentCookieStore> store_;
 };
 
 // Test the performance of priority load of cookies for a specific domain key
 TEST_F(SQLitePersistentCookieStorePerfTest, TestLoadForKeyPerformance) {
   for (int domain_num = 0; domain_num < 3; ++domain_num) {
@@ skipping 14 matching lines @@
 // Test the performance of load
 TEST_F(SQLitePersistentCookieStorePerfTest, TestLoadPerformance) {
   base::PerfTimeLogger timer("Load all cookies");
   Load();
   timer.Done();
 
   ASSERT_EQ(15000U, cookies_.size());
 }
 
 }  // namespace net