Move Screen, its impls, DisplayObserver and DisplayChangeNotifier to ui/display

ui/events/events.gyp

 # Copyright 2013 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 213 matching lines @@
         'gestures/blink/web_gesture_curve_impl.h',
       ],
     },
     {
       # GN version: //ui/events:gesture_detection
       'target_name': 'gesture_detection',
       'type': '<(component)',
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
+        '../display/display.gyp:display',
         '../gfx/gfx.gyp:gfx',
         '../gfx/gfx.gyp:gfx_geometry',
         'events_base',
       ],
       'defines': [
         'GESTURE_DETECTION_IMPLEMENTATION',
       ],
       'sources': [
         # Note: sources list duplicated in GN build.
         'gesture_detection/bitset_32.h',
@@ skipping 147 matching lines @@
           'variables': {
             'jni_gen_package': 'ui',
             'input_java_class': 'android/view/KeyEvent.class',
           },
           'includes': [ '../../build/jar_file_jni_generator.gypi' ],
         },
       ],
     }],
   ],
 }