Remove enable/disable wheel gestures setting.

content/content_common.gypi

 # Copyright (c) 2012 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../cc/cc.gyp:cc',
     '../cc/ipc/cc_ipc.gyp:cc_ipc',
     '../components/tracing.gyp:tracing',
@@ skipping 348 matching lines @@
       'common/input/event_with_latency_info.h',
       'common/input/gesture_event_stream_validator.cc',
       'common/input/gesture_event_stream_validator.h',
       'common/input/input_event.cc',
       'common/input/input_event.h',
       'common/input/input_event_ack.cc',
       'common/input/input_event_ack.h',
       'common/input/input_event_dispatch_type.h',
       'common/input/input_event_stream_validator.cc',
       'common/input/input_event_stream_validator.h',
-      'common/input/input_event_utils.cc',
-      'common/input/input_event_utils.h',
       'common/input/input_param_traits.cc',
       'common/input/input_param_traits.h',
       'common/input/scoped_web_input_event.cc',
       'common/input/scoped_web_input_event.h',
       'common/input/synthetic_gesture_packet.cc',
       'common/input/synthetic_gesture_packet.h',
       'common/input/synthetic_gesture_params.cc',
       'common/input/synthetic_gesture_params.h',
       'common/input/synthetic_pinch_gesture_params.cc',
       'common/input/synthetic_pinch_gesture_params.h',
@@ skipping 280 matching lines @@
       ],
     }],
     ['enable_ipc_fuzzer==1', {
       'sources': [
         'common/external_ipc_dumper.cc',
         'common/external_ipc_dumper.h',
       ],
     }],
   ],
 }