Fix X11DesktopHandler::ActivateWindow on Unity for known user gestures

ui/views/widget/desktop_aura/x11_desktop_handler.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 UI_VIEWS_WIDGET_DESKTOP_AURA_X11_DESKTOP_HANDLER_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_X11_DESKTOP_HANDLER_H_
 
 #include <X11/Xlib.h>
 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
 #undef RootWindow
@@ skipping 23 matching lines @@
   // key press on a Chrome window.
   int wm_user_time_ms() const {
     return wm_user_time_ms_;
   }
   void set_wm_user_time_ms(unsigned long time_ms) {
     wm_user_time_ms_ = time_ms;
   }
 
   // Sends a request to the window manager to activate |window|.
   // This method should only be called if the window is already mapped.
-  void ActivateWindow(::Window window);
+  void ActivateWindow(::Window window, bool for_user_gesture);
 
   // Attempts to get the window manager to deactivate |window| by moving it to
   // the bottom of the stack. Regardless of whether |window| was actually
   // deactivated, sets the window as inactive in our internal state.
   void DeactivateWindow(::Window window);
 
   // Checks if the current active window is |window|.
   bool IsActiveWindow(::Window window) const;
 
   // Processes activation/focus related events. Some of these events are
@@ skipping 45 matching lines @@
   ui::X11AtomCache atom_cache_;
 
   bool wm_supports_active_window_;
 
   DISALLOW_COPY_AND_ASSIGN(X11DesktopHandler);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_X11_DESKTOP_HANDLER_H_