Add more size_t -> int warning fixes for the win x64 GN build.

components/bookmarks/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/ui.gni")
 
 source_set("browser") {
   sources = [
     "base_bookmark_model_observer.cc",
     "base_bookmark_model_observer.h",
@@ skipping 52 matching lines @@
 source_set("unit_tests") {
   testonly = true
   sources = [
     "bookmark_codec_unittest.cc",
     "bookmark_expanded_state_tracker_unittest.cc",
     "bookmark_index_unittest.cc",
     "bookmark_model_unittest.cc",
     "bookmark_utils_unittest.cc",
   ]
 
+  configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
+
   deps = [
     ":browser",
     "//base:prefs",
     "//base:prefs_test_support",
     "//components/bookmarks/common",
     "//components/bookmarks/test",
     "//components/pref_registry",
     "//testing/gtest",
     "//ui/base",
     "//url",
   ]
 }