Touch Events capability negotiation

remoting/host/input_injector.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.
 
 #ifndef REMOTING_HOST_INPUT_INJECTOR_H_
 #define REMOTING_HOST_INPUT_INJECTOR_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "remoting/protocol/clipboard_stub.h"
@@ skipping 10 matching lines @@
                       public protocol::InputStub {
  public:
   // Creates a default input injector for the current platform. This
   // object should do as much work as possible on |main_task_runner|,
   // using |ui_task_runner| only for tasks actually requiring a UI
   // thread.
   static scoped_ptr<InputInjector> Create(
       scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner);
 
+  // Returns true if the InputInjector returned by Create() supports
+  // InjectTouchEvent() on this platform.
+  static bool SupportsTouchEvents();
+
   // Initialises any objects needed to execute events.
   virtual void Start(
       scoped_ptr<protocol::ClipboardStub> client_clipboard) = 0;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_INPUT_INJECTOR_H_