ozone: dri: Support moving between displays in MoveCursorTo(location)

ui/events/ozone/evdev/tablet_event_converter_evdev.cc

 // 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.
 
 #include "ui/events/ozone/evdev/tablet_event_converter_evdev.h"
 
 #include <errno.h>
 #include <linux/input.h>
 
 #include "base/message_loop/message_loop.h"
@@ skipping 88 matching lines @@
       abs_value_dirty_ = true;
       break;
     case ABS_Y:
       y_abs_location_ = input.value;
       abs_value_dirty_ = true;
       break;
   }
 }
 
 void TabletEventConverterEvdev::UpdateCursor() {
-  int width = cursor_->GetCursorDisplayBounds().width();
-  int height = cursor_->GetCursorDisplayBounds().height();
-  int x = ((x_abs_location_ - x_abs_min_) * width) / x_abs_range_;
-  int y = ((y_abs_location_ - y_abs_min_) * height) / y_abs_range_;
+  gfx::Rect display_bounds = cursor_->GetCursorDisplayBounds();
+
+  int x =
+      ((x_abs_location_ - x_abs_min_) * display_bounds.width()) / x_abs_range_;
+  int y =
+      ((y_abs_location_ - y_abs_min_) * display_bounds.height()) / y_abs_range_;
+
+  x += display_bounds.x();
+  y += display_bounds.y();
 
   cursor_->MoveCursorTo(gfx::PointF(x, y));
 }
 
 void TabletEventConverterEvdev::DispatchMouseButton(const input_event& input) {
   if (!cursor_)
     return;
 
   unsigned int modifier;
   // These are the same as X11 behaviour
@@ skipping 35 matching lines @@
 
   callback_.Run(make_scoped_ptr(
       new MouseEvent(ui::ET_MOUSE_MOVED, cursor_->location(),
                      cursor_->location(), modifiers_->GetModifierFlags(),
                      /* changed_button_flags */ 0)));
 
   abs_value_dirty_ = false;
 }
 
 }  // namespace ui