Remove task.h and finish base::Bind() migration.

base/threading/worker_pool_unittest.cc

 // Copyright (c) 2011 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 "base/threading/worker_pool.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/location.h"
 #include "base/message_loop.h"
-#include "base/task.h"
 #include "base/test/test_timeouts.h"
 #include "base/time.h"
 #include "base/threading/thread_checker_impl.h"
 #include "base/synchronization/waitable_event.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 typedef PlatformTest WorkerPoolTest;
 
 namespace base {
@@ skipping 68 matching lines @@
   const TimeDelta kMaxDuration =
       TimeDelta::FromMilliseconds(TestTimeouts::tiny_timeout_ms());
   TimeTicks start = TimeTicks::Now();
   while (!tester->finished() && TimeTicks::Now() - start < kMaxDuration) {
     MessageLoop::current()->RunAllPending();
   }
   EXPECT_TRUE(tester->finished());
 }
 
 }  // namespace base