[WIP][Ozone] Support external touchscreens

ui/events/ozone/evdev/touch_event_converter_evdev.h

 // Copyright 2014 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_EVENTS_OZONE_EVDEV_TOUCH_EVENT_CONVERTER_EVDEV_H_
 #define UI_EVENTS_OZONE_EVDEV_TOUCH_EVENT_CONVERTER_EVDEV_H_
 
 #include <bitset>
 
 #include "base/compiler_specific.h"
@@ skipping 56 matching lines @@
   int pressure_max_;  // Used to normalize pressure values.
 
   // Input range for x-axis.
   float x_min_tuxels_;
   float x_num_tuxels_;
 
   // Input range for y-axis.
   float y_min_tuxels_;
   float y_num_tuxels_;
 
-  // Output range for x-axis.
-  float x_min_pixels_;
-  float x_num_pixels_;
-
-  // Output range for y-axis.
-  float y_min_pixels_;
-  float y_num_pixels_;
-
   // Size of the touchscreen as reported by the driver.
   gfx::Size native_size_;
 
   // Touch point currently being updated from the /dev/input/event* stream.
   int current_slot_;
 
   // Bit field tracking which in-progress touch points have been modified
   // without a syn event.
   std::bitset<MAX_FINGERS> altered_slots_;
 
@@ skipping 11 matching lines @@
 
   // In-progress touch points.
   InProgressEvents events_[MAX_FINGERS];
 
   DISALLOW_COPY_AND_ASSIGN(TouchEventConverterEvdev);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_OZONE_EVDEV_TOUCH_EVENT_CONVERTER_EVDEV_H_