Remove TestWebThreadBundle::REAL_TASK_SCHEDULER.

ios/web/public/test/test_web_thread_bundle.h

 // Copyright 2014 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.
 
 #ifndef IOS_WEB_PUBLIC_TEST_TEST_WEB_THREAD_BUNDLE_H_
 #define IOS_WEB_PUBLIC_TEST_TEST_WEB_THREAD_BUNDLE_H_
 
 // TestWebThreadBundle is a convenience class for creating a set of
 // TestWebThreads, a blocking pool, and a task scheduler in unit tests. For
 // most tests, it is sufficient to just instantiate the TestWebThreadBundle as a
 // member variable. It is a good idea to put the TestWebThreadBundle as the
 // first member variable in test classes, so it is destroyed last, and the test
 // threads always exist from the perspective of other classes.
 //
-// By default, all of the created TestWebThreads and the task scheduler will
-// be backed by a single shared MessageLoop. If a test truly needs separate
-// threads, it can do so by passing the appropriate combination of option values
-// during the TestWebThreadBundle construction.
+// By default, all of the created TestWebThreads will be backed by a single
+// shared MessageLoop. If a test truly needs separate threads, it can do so by
+// passing the appropriate combination of option values during the
+// TestWebThreadBundle construction.
 //
-// To synchronously run tasks posted to task scheduler or to TestWebThreads
-// that use the shared MessageLoop, call RunLoop::Run/RunUntilIdle() on the
-// thread where the TestWebThreadBundle lives. The destructor of
-// TestWebThreadBundle runs remaining TestWebThreads tasks, remaining
-// blocking pool tasks, and remaining BLOCK_SHUTDOWN task scheduler tasks.
+// To synchronously run tasks posted to TestWebThreads that use the shared
+// MessageLoop, call RunLoop::Run/RunUntilIdle() on the thread where the
+// TestWebThreadBundle lives. The destructor of TestWebThreadBundle runs
+// remaining TestWebThreads tasks, remaining blocking pool tasks, and remaining
+// BLOCK_SHUTDOWN task scheduler tasks.
 //
 // Some tests using the IO thread expect a MessageLoopForIO. Passing
 // IO_MAINLOOP will use a MessageLoopForIO for the main MessageLoop.
 // Most of the time, this avoids needing to use a REAL_IO_THREAD.
 
 #include <memory>
 
 #include "base/macros.h"
 
 namespace base {
 class MessageLoop;
 namespace test {
 class ScopedAsyncTaskScheduler;
-class ScopedTaskScheduler;
 }  // namespace test
 }  // namespace base
 
 namespace web {
 
 class TestWebThread;
 
 class TestWebThreadBundle {
  public:
   // Used to specify the type of MessageLoop that backs the UI thread, and
   // which of the named WebThreads should be backed by a real
   // threads. The UI thread is always the main thread in a unit test.
   enum Options {
     DEFAULT = 0,
     IO_MAINLOOP = 1 << 0,
     REAL_DB_THREAD = 1 << 1,
     REAL_FILE_THREAD = 1 << 2,
     REAL_IO_THREAD = 1 << 3,
-    REAL_TASK_SCHEDULER = 1 << 4,
   };
 
   TestWebThreadBundle();
   explicit TestWebThreadBundle(int options);
 
   ~TestWebThreadBundle();
 
  private:
   void Init(int options);
 
   std::unique_ptr<base::MessageLoop> message_loop_;
   std::unique_ptr<base::test::ScopedAsyncTaskScheduler>
       scoped_async_task_scheduler_;
-  std::unique_ptr<base::test::ScopedTaskScheduler> scoped_task_scheduler_;
   std::unique_ptr<TestWebThread> ui_thread_;
   std::unique_ptr<TestWebThread> db_thread_;
   std::unique_ptr<TestWebThread> file_thread_;
   std::unique_ptr<TestWebThread> file_user_blocking_thread_;
   std::unique_ptr<TestWebThread> cache_thread_;
   std::unique_ptr<TestWebThread> io_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(TestWebThreadBundle);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_TEST_TEST_WEB_THREAD_BUNDLE_H_