Move BackgroundContents to the directory in which it belongs.

chrome/chrome_browser.gypi

 # Copyright 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 778 matching lines @@
       'browser/accessibility/accessibility_events.cc',
       'browser/accessibility/accessibility_events.h',
       'browser/accessibility/accessibility_extension_api_constants.cc',
       'browser/accessibility/accessibility_extension_api_constants.h',
       'browser/accessibility/ax_tree_id_registry.cc',
       'browser/accessibility/ax_tree_id_registry.h',
       'browser/accessibility/invert_bubble_prefs.cc',
       'browser/accessibility/invert_bubble_prefs.h',
       'browser/auto_launch_trial.cc',
       'browser/auto_launch_trial.h',
+      'browser/background/background_contents.cc',
+      'browser/background/background_contents.h',
       'browser/bookmarks/bookmark_html_writer.cc',
       'browser/bookmarks/bookmark_html_writer.h',
       'browser/certificate_viewer.cc',
       'browser/certificate_viewer.h',
       'browser/chrome_browser_field_trials_desktop.cc',
       'browser/chrome_browser_field_trials_desktop.h',
       'browser/chrome_browser_main_posix.cc',
       'browser/chrome_browser_main_posix.h',
       'browser/chrome_device_client.cc',
       'browser/chrome_device_client.h',
@@ skipping 241 matching lines @@
       'browser/sync/glue/extension_backed_data_type_controller.h',
       'browser/sync/glue/extension_data_type_controller.cc',
       'browser/sync/glue/extension_data_type_controller.h',
       'browser/sync/glue/extension_setting_data_type_controller.cc',
       'browser/sync/glue/extension_setting_data_type_controller.h',
       'browser/sync/glue/synced_tab_delegate.cc',
       'browser/sync/profile_sync_service_base.cc',
       'browser/sync/profile_sync_service_base.h',
       'browser/sync/sync_ui_util.cc',
       'browser/sync/sync_ui_util.h',
-      'browser/tab_contents/background_contents.cc',
-      'browser/tab_contents/background_contents.h',
     ],
     'chrome_browser_win_sources': [
       'browser/browser_process_platform_part_aurawin.cc',
       'browser/browser_process_platform_part_aurawin.h',
       'browser/first_run/try_chrome_dialog_view.cc',
       'browser/first_run/try_chrome_dialog_view.h',
       'browser/first_run/upgrade_util.cc',
       'browser/google/did_run_updater_win.cc',
       'browser/google/did_run_updater_win.h',
       'browser/hang_monitor/hang_crash_dump_win.cc',
@@ skipping 2662 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/sync_file_system/drive_backend',
             'proto_out_dir': 'chrome/browser/sync_file_system/drive_backend',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],
   ],
 }