Convert device_sensors to use mojo.

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 277 matching lines @@
       'common/cursors/webcursor_android.cc',
       'common/cursors/webcursor_aura.cc',
       'common/cursors/webcursor_aurawin.cc',
       'common/cursors/webcursor_aurax11.cc',
       'common/cursors/webcursor_mac.mm',
       'common/cursors/webcursor_ozone.cc',
       'common/database_messages.h',
       'common/date_time_suggestion.h',
       'common/device_sensors/device_light_data.h',
       'common/device_sensors/device_light_hardware_buffer.h',
-      'common/device_sensors/device_light_messages.h',
       'common/device_sensors/device_motion_hardware_buffer.h',
-      'common/device_sensors/device_motion_messages.h',
       'common/device_sensors/device_orientation_hardware_buffer.h',
-      'common/device_sensors/device_orientation_messages.h',
       'common/devtools_messages.h',
       'common/discardable_shared_memory_heap.cc',
       'common/discardable_shared_memory_heap.h',
       'common/dom_storage/dom_storage_map.cc',
       'common/dom_storage/dom_storage_map.h',
       'common/dom_storage/dom_storage_messages.h',
       'common/drag_event_source_info.h',
       'common/drag_messages.h',
       'common/drag_traits.h',
       'common/dwrite_font_proxy_messages.h',
@@ skipping 350 matching lines @@
       ],
     }],
     ['enable_ipc_fuzzer==1', {
       'sources': [
         'common/external_ipc_dumper.cc',
         'common/external_ipc_dumper.h',
       ],
     }],
   ],
 }