Make SQLitePersistentCookieStorePerfTest's SequencedWorkerPool multi-threaded.

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"
@@ skipping 15 matching lines @@
 
 namespace {
 
 const base::FilePath::CharType cookie_filename[] = FILE_PATH_LITERAL("Cookies");
 
 }  // namespace
 
 class SQLitePersistentCookieStorePerfTest : public testing::Test {
  public:
   SQLitePersistentCookieStorePerfTest()
-      : pool_owner_(new base::SequencedWorkerPoolOwner(1, "Background Pool")),
+      : pool_owner_(new base::SequencedWorkerPoolOwner(2, "SetupPool")),
         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(const std::vector<CanonicalCookie*>& cookies) {
     cookies_ = cookies;
     loaded_event_.Signal();
   }
 
@@ skipping 39 matching lines @@
             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(1, "pool"));
+    pool_owner_.reset(new base::SequencedWorkerPoolOwner(2, "TestPool"));
 
     store_ = new SQLitePersistentCookieStore(
         temp_dir_.path().Append(cookie_filename), client_task_runner(),
         background_task_runner(), false, NULL);
   }
 
   void TearDown() override {
     store_ = NULL;
   }
 
@@ skipping 27 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