Remove unused include in sequenced_worker_pool.h

remoting/host/fake_desktop_environment.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 REMOTING_HOST_FAKE_DESKTOP_ENVIRONMENT_H_
 #define REMOTING_HOST_FAKE_DESKTOP_ENVIRONMENT_H_
 
 #include <cstdint>
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/single_thread_task_runner.h"
 #include "remoting/host/desktop_environment.h"
 #include "remoting/host/fake_mouse_cursor_monitor.h"
 #include "remoting/host/input_injector.h"
 #include "remoting/host/screen_controls.h"
 #include "remoting/protocol/fake_desktop_capturer.h"
 
 namespace remoting {
 
 class FakeInputInjector : public InputInjector,
                           public base::SupportsWeakPtr<FakeInputInjector> {
@@ skipping 110 matching lines @@
   protocol::FakeDesktopCapturer::FrameGenerator frame_generator_;
 
   base::WeakPtr<FakeDesktopEnvironment> last_desktop_environment_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeDesktopEnvironmentFactory);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_FAKE_DESKTOP_ENVIRONMENT_H_