Headers for resource tracking.

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 210984326d4d9452cffce91ca0a132f644f0b98f..2e7e7dbbd6c6f422517b148856846afba419d7a2 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -2196,12 +2196,15 @@ split_static_library("browser") {
       "android/offline_pages/request_coordinator_factory.h",
       "offline_pages/background_loader_offliner.cc",
       "offline_pages/background_loader_offliner.h",
+      "offline_pages/offliner_user_data.cc",
+      "offline_pages/offliner_user_data.h",
       "offline_pages/prefetch/offline_metrics_collector_impl.cc",
       "offline_pages/prefetch/offline_metrics_collector_impl.h",
       "offline_pages/prefetch/prefetch_instance_id_proxy.cc",
       "offline_pages/prefetch/prefetch_instance_id_proxy.h",
       "offline_pages/prefetch/prefetch_service_factory.cc",
       "offline_pages/prefetch/prefetch_service_factory.h",
+      "offline_pages/resource_loading_observer.h",
     ]
     if (is_android) {
       sources += [