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

remoting/protocol/input_stub.h

 // Copyright (c) 2012 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.
 
 // Interface for a device that receives input events.
 // This interface handles input event messages defined in event.proto.
 
 #ifndef REMOTING_PROTOCOL_INPUT_STUB_H_
 #define REMOTING_PROTOCOL_INPUT_STUB_H_
 
 #include "base/basictypes.h"
 
 namespace remoting {
 namespace protocol {
 
 class KeyEvent;
 class TextEvent;
 class MouseEvent;
+class TouchEvent;
 
 class InputStub {
  public:
   InputStub() {}
   virtual ~InputStub() {}
 
   // Implementations must never assume the presence of any |event| fields,
   // nor assume that their contents are valid.
   virtual void InjectKeyEvent(const KeyEvent& event) = 0;
   virtual void InjectTextEvent(const TextEvent& event) = 0;
   virtual void InjectMouseEvent(const MouseEvent& event) = 0;
+  virtual void InjectTouchEvent(const TouchEvent& event) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(InputStub);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_INPUT_STUB_H_