Disable touch calibration on external touchscreen.

ui/aura/root_window_host.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_ROOT_WINDOW_HOST_H_
 #define UI_AURA_ROOT_WINDOW_HOST_H_
 
 #include <vector>
 
 #include "base/message_loop.h"
@@ skipping 15 matching lines @@
 class RootWindowHostDelegate;
 
 // RootWindowHost bridges between a native window and the embedded RootWindow.
 // It provides the accelerated widget and maps events from the native os to
 // aura.
 class AURA_EXPORT RootWindowHost {
  public:
   virtual ~RootWindowHost() {}
 
   // Creates a new RootWindowHost. The caller owns the returned value.
-  static RootWindowHost* Create(const gfx::Rect& bounds);
+  static RootWindowHost* Create(const gfx::Rect& bounds,
+                                bool is_internal_display);
 
   // Returns the actual size of the screen.
   // (gfx::Screen only reports on the virtual desktop exposed by Aura.)
   static gfx::Size GetNativeScreenSize();
 
   // Sets the delegate, which is normally done by the root window.
   virtual void SetDelegate(RootWindowHostDelegate* delegate) = 0;
 
   virtual RootWindow* GetRootWindow() = 0;
 
@@ skipping 67 matching lines @@
   // Called when the device scale factor of the root window has chagned.
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) = 0;
 
   // Stop listening events in preparation for shutdown.
   virtual void PrepareForShutdown() = 0;
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ROOT_WINDOW_HOST_H_