[Offline pages] Create offliner that uses background loader

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 363b5eb04f66fdd8a5094ac399dd7cb7b1dc1902..8717fd1324227ef3aa07921e976b4faa3ac50a05 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -1407,6 +1407,7 @@ split_static_library("browser") {
     "//components/network_time",
     "//components/ntp_snippets",
     "//components/ntp_tiles",
+    "//components/offline_pages/content/background_loader",
     "//components/offline_pages/core",
     "//components/offline_pages/core/background:background_offliner",
     "//components/offline_pages/core/downloads:offline_pages_ui_adapter",
@@ -3105,6 +3106,8 @@ split_static_library("browser") {
       "android/ntp/ntp_snippets_launcher.h",
       "android/ntp/popular_sites.cc",
       "android/ntp/popular_sites.h",
+      "android/offline_pages/background_loader_offliner.cc",
+      "android/offline_pages/background_loader_offliner.h",
       "android/offline_pages/background_scheduler_bridge.cc",
       "android/offline_pages/background_scheduler_bridge.h",
       "android/offline_pages/downloads/offline_page_download_bridge.cc",