Implement the content/renderer and content/browser part of the Device Motion API.

content/content_browser.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': [
     'browser/speech/proto/speech_proto.gyp:speech_proto',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
@@ skipping 352 matching lines @@
     'browser/device_monitor_mac.h',
     'browser/device_monitor_mac.mm',
     'browser/device_orientation/accelerometer_mac.cc',
     'browser/device_orientation/accelerometer_mac.h',
     'browser/device_orientation/data_fetcher.h',
     'browser/device_orientation/data_fetcher_impl_android.cc',
     'browser/device_orientation/data_fetcher_impl_android.h',
     'browser/device_orientation/data_fetcher_impl_win.cc',
     'browser/device_orientation/data_fetcher_impl_win.h',
     'browser/device_orientation/device_data.h',
+    'browser/device_orientation/device_motion_provider.cc',
+    'browser/device_orientation/device_motion_provider.h',
+    'browser/device_orientation/device_motion_service.cc',
+    'browser/device_orientation/device_motion_service.h', 
     'browser/device_orientation/message_filter.cc',
     'browser/device_orientation/message_filter.h',
     'browser/device_orientation/motion.cc',
     'browser/device_orientation/motion.h',
     'browser/device_orientation/motion_message_filter.cc',
     'browser/device_orientation/motion_message_filter.h',
     'browser/device_orientation/observer_delegate.cc',
     'browser/device_orientation/observer_delegate.h',
     'browser/device_orientation/orientation.cc',
     'browser/device_orientation/orientation.h',
@@ skipping 342 matching lines @@
     'browser/renderer_host/compositing_iosurface_layer_mac.h',
     'browser/renderer_host/compositing_iosurface_layer_mac.mm',
     'browser/renderer_host/compositing_iosurface_mac.h',
     'browser/renderer_host/compositing_iosurface_mac.mm',
     'browser/renderer_host/compositing_iosurface_shader_programs_mac.cc',
     'browser/renderer_host/compositing_iosurface_shader_programs_mac.h',
     'browser/renderer_host/compositing_iosurface_transformer_mac.cc',
     'browser/renderer_host/compositing_iosurface_transformer_mac.h',
     'browser/renderer_host/database_message_filter.cc',
     'browser/renderer_host/database_message_filter.h',
+    'browser/renderer_host/device_motion_browser_message_filter.cc',
+    'browser/renderer_host/device_motion_browser_message_filter.h',
     'browser/renderer_host/dip_util.cc',
     'browser/renderer_host/dip_util.h',
     'browser/renderer_host/file_utilities_message_filter.cc',
     'browser/renderer_host/file_utilities_message_filter.h',
     'browser/renderer_host/gamepad_browser_message_filter.cc',
     'browser/renderer_host/gamepad_browser_message_filter.h',
     'browser/renderer_host/gesture_event_filter.cc',
     'browser/renderer_host/gesture_event_filter.h',
     'browser/renderer_host/gpu_message_filter.cc',
     'browser/renderer_host/gpu_message_filter.h',
@@ skipping 702 matching lines @@
         '../third_party/speex/speex.gyp:libspeex',
       ],
     }],
     ['linux_use_libgps==1', {
       'dependencies': [
         '../build/linux/system.gyp:libgps',
       ],
     }],
   ],
 }