Remove usage of HostZoomMap from c/b/loader via ReadyToCommitNavigation

content/browser/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
 
 source_set("browser") {
@@ skipping 626 matching lines @@
     "histogram_internals_request_job.h",
     "histogram_message_filter.cc",
     "histogram_message_filter.h",
     "histogram_subscriber.h",
     "histogram_synchronizer.cc",
     "histogram_synchronizer.h",
     "host_zoom_level_context.cc",
     "host_zoom_level_context.h",
     "host_zoom_map_impl.cc",
     "host_zoom_map_impl.h",
+    "host_zoom_map_observer.cc",
+    "host_zoom_map_observer.h",
     "indexed_db/indexed_db.h",
     "indexed_db/indexed_db_active_blob_registry.cc",
     "indexed_db/indexed_db_active_blob_registry.h",
     "indexed_db/indexed_db_backing_store.cc",
     "indexed_db/indexed_db_backing_store.h",
     "indexed_db/indexed_db_blob_info.cc",
     "indexed_db/indexed_db_blob_info.h",
     "indexed_db/indexed_db_callbacks.cc",
     "indexed_db/indexed_db_callbacks.h",
     "indexed_db/indexed_db_class_factory.cc",
@@ skipping 1286 matching lines @@
   if (!is_component_build) {
     public_deps = [
       ":browser",
     ]
   } else {
     public_deps = [
       "//third_party/leveldatabase",
     ]
   }
 }