Remove unused TouchEventCalibrate class.

ui/aura/window_tree_host_x11.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_AURA_WINDOW_TREE_HOST_X11_H_
 #define UI_AURA_WINDOW_TREE_HOST_X11_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/aura/aura_export.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/x/x11_atom_cache.h"
 
 // X forward decls to avoid including Xlib.h in a header file.
 typedef struct _XDisplay XDisplay;
 typedef unsigned long XID;
 typedef XID Window;
 
 namespace ui {
 class MouseEvent;
 }
 
 namespace aura {
 
-namespace internal {
-class TouchEventCalibrate;
-}
-
 class AURA_EXPORT WindowTreeHostX11 : public WindowTreeHost,
                                       public ui::PlatformEventDispatcher {
-
  public:
   explicit WindowTreeHostX11(const gfx::Rect& bounds);
   ~WindowTreeHostX11() override;
 
   // ui::PlatformEventDispatcher:
   bool CanDispatchEvent(const ui::PlatformEvent& event) override;
   uint32_t DispatchEvent(const ui::PlatformEvent& event) override;
 
   // WindowTreeHost:
   ui::EventSource* GetEventSource() override;
@@ skipping 41 matching lines @@
 
   // Current Aura cursor.
   gfx::NativeCursor current_cursor_;
 
   // Is the window mapped to the screen?
   bool window_mapped_;
 
   // The bounds of |xwindow_|.
   gfx::Rect bounds_;
 
-  scoped_ptr<internal::TouchEventCalibrate> touch_calibrate_;
-
   ui::X11AtomCache atom_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeHostX11);
 };
 
 namespace test {
 
 // Set the default value of the override redirect flag used to
 // create a X window for WindowTreeHostX11.
 AURA_EXPORT void SetUseOverrideRedirectWindowByDefault(bool override_redirect);
 
 }  // namespace test
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_TREE_HOST_X11_H_