Componentize //chrome/browser/offline_pages

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index fa8c33b233a36984a745e789335fd12c43481ccd..623bde3e256f05aea7309352d448cc8fe3ad01ff 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -1356,8 +1356,6 @@
       'browser/enhanced_bookmarks/bookmark_server_cluster_service_factory.h',
       'browser/enhanced_bookmarks/enhanced_bookmark_model_factory.cc',
       'browser/enhanced_bookmarks/enhanced_bookmark_model_factory.h',
-      'browser/offline_pages/offline_page_metadata_store_impl.cc',
-      'browser/offline_pages/offline_page_metadata_store_impl.h',
     ],
     'chrome_browser_bookmark_android_sources': [
       'browser/android/offline_pages/offline_page_bridge.cc',
@@ -3137,7 +3135,6 @@
         'common',
         'common_net',
         'encrypted_cert_logger_proto',
-        'offline_pages_proto',
         'probe_message_proto',
         '../components/components.gyp:autofill_core_browser',
         '../components/components.gyp:bookmarks_browser',
@@ -3896,18 +3893,6 @@
       'includes': [ '../build/protoc.gypi', ],
     },
     {
-      # Protobuf compiler / generator for the offline page item protocol buffer.
-      # GN version: //chrome/browser/offline_pages:offline_pages_proto
-      'target_name': 'offline_pages_proto',
-      'type': 'static_library',
-      'sources': [ 'browser/offline_pages/offline_pages.proto', ],
-      'variables': {
-        'proto_in_dir': 'browser/offline_pages',
-        'proto_out_dir': 'chrome/browser/offline_pages',
-      },
-      'includes': [ '../build/protoc.gypi', ],
-    },
-    {
       # Protobuf compiler / generator for Probe Message.
       # GN version: //chrome/browser/net:probe_message_proto
       'target_name': 'probe_message_proto',