Automated IWYU fix for TaskRunner includes.

remoting/protocol/fake_connection_to_host.h

 // Copyright 2015 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_PROTOCOL_FAKE_CONNECTION_TO_HOST_H_
 #define REMOTING_PROTOCOL_FAKE_CONNECTION_TO_HOST_H_
 
 #include <string>
 
 #include "base/macros.h"
+#include "base/single_thread_task_runner.h"
 #include "remoting/protocol/connection_to_host.h"
 #include "remoting/protocol/protocol_mock_objects.h"
 
 namespace remoting {
 namespace test {
 
 class FakeConnectionToHost : public protocol::ConnectionToHost {
  public:
   FakeConnectionToHost();
   ~FakeConnectionToHost() override;
@@ skipping 34 matching lines @@
   testing::NiceMock<protocol::MockInputStub> mock_input_stub_;
   std::unique_ptr<protocol::SessionConfig> session_config_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeConnectionToHost);
 };
 
 }  // namespace test
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_FAKE_CONNECTION_TO_HOST_H_