Implement device_orientation::Provider.

chrome/chrome_browser.gypi

 # Copyright (c) 2010 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': '<(library)',
       'msvs_guid': '5BF908A7-68FB-4A4B-99E3-8C749F1FE4EA',
@@ skipping 1089 matching lines @@
         'browser/cookies_tree_model.cc',
         'browser/cookies_tree_model.h',
         'browser/cross_site_request_manager.cc',
         'browser/cross_site_request_manager.h',
         'browser/custom_home_pages_table_model.cc',
         'browser/custom_home_pages_table_model.h',
         'browser/default_encoding_combo_model.cc',
         'browser/default_encoding_combo_model.h',
         'browser/defaults.cc',
         'browser/defaults.h',
+        'browser/device_orientation/data_fetcher.h',
         'browser/device_orientation/dispatcher_host.cc',
         'browser/device_orientation/dispatcher_host.h',
         'browser/device_orientation/orientation.h',
         'browser/device_orientation/provider.cc',
         'browser/device_orientation/provider.h',
+        'browser/device_orientation/provider_impl.cc',
+        'browser/device_orientation/provider_impl.h',
         'browser/diagnostics/diagnostics_main.cc',
         'browser/diagnostics/diagnostics_main.h',
         'browser/diagnostics/diagnostics_model.h',
         'browser/diagnostics/diagnostics_model.cc',
         'browser/diagnostics/diagnostics_test.h',
         'browser/diagnostics/sqlite_diagnostics.cc',
         'browser/diagnostics/sqlite_diagnostics.h',
         'browser/diagnostics/recon_diagnostics.cc',
         'browser/diagnostics/recon_diagnostics.h',
         'browser/dock_info_gtk.cc',
@@ skipping 2705 matching lines @@
       ],
     },
   ],
 }
 
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