[Offline Pages] Create a event/activity logger

components/offline_pages.gypi

Index: components/offline_pages.gypi
diff --git a/components/offline_pages.gypi b/components/offline_pages.gypi
index c3b8b7a784b0ad5bd92b5d9afc33f46368cd01d2..523d4fd83c321710d0a1ed8e16730944289cf5c6 100644
--- a/components/offline_pages.gypi
+++ b/components/offline_pages.gypi
@@ -25,6 +25,8 @@
         'offline_pages/client_namespace_constants.h',
         'offline_pages/client_policy_controller.cc',
         'offline_pages/client_policy_controller.h',
+        'offline_pages/offline_event_logger.cc',
+        'offline_pages/offline_event_logger.h',
         'offline_pages/offline_page_archiver.h',
         'offline_pages/offline_page_client_policy.h',
         'offline_pages/offline_page_feature.cc',
@@ -33,8 +35,12 @@
         'offline_pages/offline_page_item.h',
         'offline_pages/offline_page_metadata_store.cc',
         'offline_pages/offline_page_metadata_store.h',
+        'offline_pages/offline_page_metadata_store_sql.cc',
+        'offline_pages/offline_page_metadata_store_sql.h',
         'offline_pages/offline_page_model.cc',
         'offline_pages/offline_page_model.h',
+        'offline_pages/offline_page_model_event_logger.cc',
+        'offline_pages/offline_page_model_event_logger.h',
         'offline_pages/offline_page_model_impl.cc',
         'offline_pages/offline_page_model_impl.h',
         'offline_pages/offline_page_storage_manager.cc',
@@ -42,8 +48,6 @@
         'offline_pages/offline_page_types.h',
         'offline_pages/snapshot_controller.cc',
         'offline_pages/snapshot_controller.h',
-        'offline_pages/offline_page_metadata_store_sql.cc',
-        'offline_pages/offline_page_metadata_store_sql.h',
       ],
     },
     {
@@ -68,6 +72,8 @@
         'offline_pages/background/offliner_policy.h',
         'offline_pages/background/request_coordinator.cc',
         'offline_pages/background/request_coordinator.h',
+        'offline_pages/background/request_coordinator_event_logger.cc',
+        'offline_pages/background/request_coordinator_event_logger.h',
         'offline_pages/background/request_picker.cc',
         'offline_pages/background/request_picker.h',
         'offline_pages/background/request_queue.cc',