Add touch events to the protocol, the stub layer, and to the client plugin.

remoting/host/input_injector_chromeos.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_INPUT_INJECTOR_CHROMEOS_H_
 #define REMOTING_HOST_INPUT_INJECTOR_CHROMEOS_H_
 
 #include "base/single_thread_task_runner.h"
 #include "remoting/host/input_injector.h"
 
 namespace remoting {
 
 // InputInjector implementation that translates input to ui::Events and passes
 // them to a supplied delegate for injection into ChromeOS.
 class InputInjectorChromeos : public InputInjector {
  public:
   explicit InputInjectorChromeos(
       scoped_refptr<base::SingleThreadTaskRunner> task_runner);
 
   ~InputInjectorChromeos() override;
 
   // Clipboard stub interface.
   void InjectClipboardEvent(const protocol::ClipboardEvent& event) override;
 
   // InputStub interface.
   void InjectKeyEvent(const protocol::KeyEvent& event) override;
   void InjectTextEvent(const protocol::TextEvent& event) override;
   void InjectMouseEvent(const protocol::MouseEvent& event) override;
+  void InjectTouchEvent(const protocol::TouchEvent& event) override;
 
   // InputInjector interface.
   void Start(scoped_ptr<protocol::ClipboardStub> client_clipboard) override;
 
  private:
   class Core;
 
   // Task runner for input injection.
   scoped_refptr<base::SingleThreadTaskRunner> input_task_runner_;
   scoped_ptr<Core> core_;
 
   DISALLOW_COPY_AND_ASSIGN(InputInjectorChromeos);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_INPUT_INJECTOR_CHROMEOS_H_