Add Installer.OSAgeDays metric

This adds a new metric conveying the age of the running OS instance,
where this is defined as the time-span between the current wall-clock
time and the time-stamp of the /etc/lsb-release file. This metric is
reported daily.

BUG=chromium:304950
TEST=New unit tests for daily metrics + unit tests pass. Manual test
    for Installer.OSAgeDays by inspecting chrome://histograms.

Change-Id: I6713bed6730641a95443372a3e3166c4e1dc64ee
Reviewed-on: https://chromium-review.googlesource.com/172162
Reviewed-by: Chris Sosa <sosa@chromium.org>
Commit-Queue: David Zeuthen <zeuthen@chromium.org>
Tested-by: David Zeuthen <zeuthen@chromium.org>
5 files changed
tree: 02344ef458e1ea46b0716d436e035bed1550ff0a
  1. .gitignore
  2. 99-gpio-dutflag.rules
  3. action.h
  4. action_mock.h
  5. action_pipe.h
  6. action_pipe_unittest.cc
  7. action_processor.cc
  8. action_processor.h
  9. action_processor_mock.h
  10. action_processor_unittest.cc
  11. action_unittest.cc
  12. build
  13. bzip.cc
  14. bzip.h
  15. bzip_extent_writer.cc
  16. bzip_extent_writer.h
  17. bzip_extent_writer_unittest.cc
  18. certificate_checker.cc
  19. certificate_checker.h
  20. certificate_checker_mock.h
  21. certificate_checker_unittest.cc
  22. chrome_browser_proxy_resolver.cc
  23. chrome_browser_proxy_resolver.h
  24. chrome_browser_proxy_resolver_unittest.cc
  25. clock.cc
  26. clock.h
  27. clock_interface.h
  28. connection_manager.cc
  29. connection_manager.h
  30. connection_manager_unittest.cc
  31. constants.cc
  32. constants.h
  33. cycle_breaker.cc
  34. cycle_breaker.h
  35. cycle_breaker_unittest.cc
  36. dbus_constants.h
  37. dbus_interface.h
  38. dbus_service.cc
  39. dbus_service.h
  40. delta_diff_generator.cc
  41. delta_diff_generator.h
  42. delta_diff_generator_unittest.cc
  43. delta_performer.cc
  44. delta_performer.h
  45. delta_performer_unittest.cc
  46. download_action.cc
  47. download_action.h
  48. download_action_unittest.cc
  49. error_code.h
  50. extent_mapper.cc
  51. extent_mapper.h
  52. extent_mapper_unittest.cc
  53. extent_ranges.cc
  54. extent_ranges.h
  55. extent_ranges_unittest.cc
  56. extent_writer.cc
  57. extent_writer.h
  58. extent_writer_unittest.cc
  59. fake_clock.h
  60. fake_hardware.cc
  61. fake_hardware.h
  62. fake_p2p_manager.h
  63. fake_p2p_manager_configuration.h
  64. file_descriptor.cc
  65. file_descriptor.h
  66. file_writer.cc
  67. file_writer.h
  68. file_writer_mock.h
  69. file_writer_unittest.cc
  70. filesystem_copier_action.cc
  71. filesystem_copier_action.h
  72. filesystem_copier_action_unittest.cc
  73. filesystem_iterator.cc
  74. filesystem_iterator.h
  75. filesystem_iterator_unittest.cc
  76. full_update_generator.cc
  77. full_update_generator.h
  78. full_update_generator_unittest.cc
  79. gen_coverage_html
  80. generate_delta_main.cc
  81. gpio_handler.cc
  82. gpio_handler.h
  83. gpio_handler_unittest.cc
  84. gpio_handler_unittest.h
  85. gpio_mock_file_descriptor.cc
  86. gpio_mock_file_descriptor.h
  87. gpio_mock_udev_interface.cc
  88. gpio_mock_udev_interface.h
  89. graph_types.h
  90. graph_utils.cc
  91. graph_utils.h
  92. graph_utils_unittest.cc
  93. hardware.cc
  94. hardware.h
  95. hardware_interface.h
  96. hardware_unittest.cc
  97. http_common.cc
  98. http_common.h
  99. http_fetcher.cc
  100. http_fetcher.h
  101. http_fetcher_unittest.cc
  102. inherit-review-settings-ok
  103. install_plan.cc
  104. install_plan.h
  105. libcurl_http_fetcher.cc
  106. libcurl_http_fetcher.h
  107. LICENSE
  108. local_coverage_rate
  109. main.cc
  110. marshal.list
  111. metadata.cc
  112. metadata.h
  113. metadata_unittest.cc
  114. mock_connection_manager.h
  115. mock_dbus_interface.h
  116. mock_file_writer.h
  117. mock_gpio_handler.h
  118. mock_http_fetcher.cc
  119. mock_http_fetcher.h
  120. mock_p2p_manager.h
  121. mock_payload_state.h
  122. mock_system_state.cc
  123. mock_system_state.h
  124. multi_range_http_fetcher.cc
  125. multi_range_http_fetcher.h
  126. omaha_hash_calculator.cc
  127. omaha_hash_calculator.h
  128. omaha_hash_calculator_unittest.cc
  129. omaha_request_action.cc
  130. omaha_request_action.h
  131. omaha_request_action_unittest.cc
  132. omaha_request_params.cc
  133. omaha_request_params.h
  134. omaha_request_params_unittest.cc
  135. omaha_response.h
  136. omaha_response_handler_action.cc
  137. omaha_response_handler_action.h
  138. omaha_response_handler_action_unittest.cc
  139. org.chromium.UpdateEngine.service
  140. p2p_manager.cc
  141. p2p_manager.h
  142. p2p_manager_unittest.cc
  143. payload_signer.cc
  144. payload_signer.h
  145. payload_signer_unittest.cc
  146. payload_state.cc
  147. payload_state.h
  148. payload_state_interface.h
  149. payload_state_unittest.cc
  150. postinstall_runner_action.cc
  151. postinstall_runner_action.h
  152. postinstall_runner_action_unittest.cc
  153. prefs.cc
  154. prefs.h
  155. prefs_interface.h
  156. prefs_mock.h
  157. prefs_unittest.cc
  158. proxy_resolver.cc
  159. proxy_resolver.h
  160. real_system_state.h
  161. run_unittests
  162. sample_omaha_v3_response.xml
  163. SConstruct
  164. setup_dev_packages
  165. simple_key_value_store.cc
  166. simple_key_value_store.h
  167. simple_key_value_store_unittest.cc
  168. subprocess.cc
  169. subprocess.h
  170. subprocess_unittest.cc
  171. system_state.cc
  172. system_state.h
  173. tarjan.cc
  174. tarjan.h
  175. tarjan_unittest.cc
  176. terminator.cc
  177. terminator.h
  178. terminator_unittest.cc
  179. test_http_server.cc
  180. test_utils.cc
  181. test_utils.h
  182. testrunner.cc
  183. topological_sort.cc
  184. topological_sort.h
  185. topological_sort_unittest.cc
  186. udev_interface.h
  187. unittest_key.pem
  188. unittest_key2.pem
  189. update_attempter.cc
  190. update_attempter.h
  191. update_attempter_mock.h
  192. update_attempter_unittest.cc
  193. update_check_scheduler.cc
  194. update_check_scheduler.h
  195. update_check_scheduler_unittest.cc
  196. update_engine.xml
  197. update_engine_client.cc
  198. update_metadata.proto
  199. UpdateEngine.conf
  200. utils.cc
  201. utils.h
  202. utils_unittest.cc
  203. WATCHLISTS
  204. zip_unittest.cc