Nukes the gyp/gypi files in ui

ui/events/blink/events_blink.gyp

-# Copyright 2015 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': [
-    {
-      # GN version: //ui/events/blink
-      'target_name': 'events_blink',
-      'type': 'static_library',
-      'dependencies': [
-        '../../../cc/cc.gyp:cc',
-        '../../../third_party/WebKit/public/blink_headers.gyp:blink_headers',
-        '../../gfx/gfx.gyp:gfx_geometry',
-        '../events.gyp:events',
-        '../events.gyp:gesture_detection',
-      ],
-      'sources': [
-        # Note: sources list duplicated in GN build.
-        'blink_event_util.cc',
-        'blink_event_util.h',
-        'input_handler_proxy_client.h',
-        'input_handler_proxy.cc',
-        'input_handler_proxy.h',
-        'input_scroll_elasticity_controller.cc',
-        'input_scroll_elasticity_controller.h',
-        'synchronous_input_handler_proxy.h',
-      ],
-    },
-  ],
-}