[Ozone-DRI] Do proper bounds checks when moving the cursor

ui/ozone/platform/dri/BUILD.gn

 # 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.
 
 import("//build/config/linux/pkg_config.gni")
 import("//ui/ozone/ozone.gni")
 
 pkg_config("libdrm") {
   packages = [ "libdrm" ]
 }
@@ skipping 20 matching lines @@
     "dri_surface_factory.h",
     "dri_util.cc",
     "dri_util.h",
     "dri_vsync_provider.cc",
     "dri_vsync_provider.h",
     "dri_window.cc",
     "dri_window.h",
     "dri_window_delegate.h",
     "dri_window_delegate_impl.cc",
     "dri_window_delegate_impl.h",
+    "dri_window_delegate_manager.cc",
+    "dri_window_delegate_manager.h",
     "dri_window_manager.cc",
     "dri_window_manager.h",
     "dri_wrapper.cc",
     "dri_wrapper.h",
     "hardware_display_controller.cc",
     "hardware_display_controller.h",
     "scoped_drm_types.cc",
     "scoped_drm_types.h",
     "screen_manager.cc",
     "screen_manager.h",
@@ skipping 89 matching lines @@
       "//base",
       "//skia",
       "//ui/events/ozone:events_ozone_evdev",
     ]
 
     direct_dependent_configs = [
       ":libgbm",
     ]
   }
 }