Remove CRWNetworkActivityIndicatorManager.

ios/web/BUILD.gn

 # Copyright 2015 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("//ios/build/config.gni")
 import("//ios/web/js_compile.gni")
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
 
 group("all_tests") {
@@ skipping 301 matching lines @@
 }
 
 source_set("core") {
   configs += [ "//build/config/compiler:enable_arc" ]
   deps = [
     "//base",
     "//url",
   ]
 
   sources = [
-    "crw_network_activity_indicator_manager.h",
-    "crw_network_activity_indicator_manager.mm",
     "history_state_util.cc",
     "history_state_util.h",
   ]
 }
 
 source_set("user_agent") {
   deps = [
     "//base",
   ]
 
@@ skipping 168 matching lines @@
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/ocmock",
     "//ui/base:test_support",
   ]
 
   sources = [
     "active_state_manager_impl_unittest.mm",
     "alloc_with_zone_interceptor_unittest.mm",
     "browser_state_unittest.cc",
-    "crw_network_activity_indicator_manager_unittest.mm",
     "history_state_util_unittest.mm",
     "navigation/crw_session_controller_unittest.mm",
     "navigation/crw_session_entry_unittest.mm",
     "navigation/navigation_item_impl_unittest.mm",
     "navigation/navigation_manager_impl_unittest.mm",
     "navigation/nscoder_util_unittest.mm",
     "net/cert_host_pair_unittest.cc",
     "net/cert_policy_unittest.cc",
     "net/clients/crw_js_injection_network_client_unittest.mm",
     "net/crw_cert_verification_controller_unittest.mm",
@@ skipping 108 matching lines @@
 }
 
 grit("resources") {
   source = "ios_web_resources.grd"
   use_qualified_include = true
   outputs = [
     "grit/ios_web_resources.h",
     "ios_web_resources.pak",
   ]
 }