Revert of Remove supports_touch_events flag from BasicDesktopEnvironment

remoting/host/ipc_desktop_environment.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_IPC_DESKTOP_ENVIRONMENT_H_
 #define REMOTING_HOST_IPC_DESKTOP_ENVIRONMENT_H_
 
 #include <cstdint>
 #include <map>
 #include <memory>
@@ skipping 26 matching lines @@
  public:
   // |desktop_session_connector| is used to bind DesktopSessionProxy to
   // a desktop session, to be notified every time the desktop process is
   // restarted.
   IpcDesktopEnvironment(
       scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
       base::WeakPtr<ClientSessionControl> client_session_control,
       base::WeakPtr<DesktopSessionConnector> desktop_session_connector,
-      bool virtual_terminal);
+      bool virtual_terminal,
+      bool supports_touch_events);
   ~IpcDesktopEnvironment() override;
 
   // DesktopEnvironment implementation.
   std::unique_ptr<AudioCapturer> CreateAudioCapturer() override;
   std::unique_ptr<InputInjector> CreateInputInjector() override;
   std::unique_ptr<ScreenControls> CreateScreenControls() override;
   std::unique_ptr<webrtc::DesktopCapturer> CreateVideoCapturer() override;
   std::unique_ptr<webrtc::MouseCursorMonitor> CreateMouseCursorMonitor()
       override;
   std::string GetCapabilities() const override;
@@ skipping 33 matching lines @@
                        bool virtual_terminal) override;
   void DisconnectTerminal(DesktopSessionProxy* desktop_session_proxy) override;
   void SetScreenResolution(DesktopSessionProxy* desktop_session_proxy,
                            const ScreenResolution& resolution) override;
   void OnDesktopSessionAgentAttached(
       int terminal_id,
       base::ProcessHandle desktop_process_handle,
       IPC::PlatformFileForTransit desktop_pipe) override;
   void OnTerminalDisconnected(int terminal_id) override;
 
+  // Enables or disables touch events capability.
+  void set_supports_touch_events(bool enable) {
+    supports_touch_events_ = enable;
+  }
+
  private:
   // Used to run the audio capturer.
   scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner_;
 
   // Task runner on which methods of DesktopEnvironmentFactory interface should
   // be called.
   scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner_;
 
   // Task runner used for running background I/O.
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 
   // True if curtain mode is enabled.
   bool curtain_enabled_ = false;
 
   // IPC channel connected to the daemon process.
   IPC::Sender* daemon_channel_;
 
   // List of DesktopEnvironment instances we've told the daemon process about.
   typedef std::map<int, DesktopSessionProxy*> ActiveConnectionsList;
   ActiveConnectionsList active_connections_;
 
   // Next desktop session ID. IDs are allocated sequentially starting from 0.
   // This gives us more than 67 years of unique IDs assuming a new ID is
   // allocated every second.
   int next_id_ = 0;
 
+  // Defines whether desktop environments created by this factory will support
+  // touch events by default.
+  bool supports_touch_events_ = false;
+
   // Factory for weak pointers to DesktopSessionConnector interface.
   base::WeakPtrFactory<DesktopSessionConnector> connector_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(IpcDesktopEnvironmentFactory);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_IPC_DESKTOP_ENVIRONMENT_H_