Delete unused chrome://fallback-icon/ handling

chrome/test/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/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 2984 matching lines @@
     "../browser/download/download_request_limiter_unittest.cc",
     "../browser/download/download_resource_throttle_unittest.cc",
     "../browser/download/download_status_updater_unittest.cc",
     "../browser/download/download_target_determiner_unittest.cc",
     "../browser/download/download_ui_controller_unittest.cc",
     "../browser/engagement/important_sites_util_unittest.cc",
     "../browser/engagement/site_engagement_helper_unittest.cc",
     "../browser/engagement/site_engagement_score_unittest.cc",
     "../browser/engagement/site_engagement_service_unittest.cc",
     "../browser/external_protocol/external_protocol_handler_unittest.cc",
-    "../browser/favicon/chrome_fallback_icon_client_unittest.cc",
     "../browser/file_select_helper_unittest.cc",
     "../browser/gcm/fake_gcm_profile_service.cc",
     "../browser/gcm/fake_gcm_profile_service.h",
     "../browser/geolocation/geolocation_permission_context_unittest.cc",
     "../browser/global_keyboard_shortcuts_mac_unittest.mm",
     "../browser/google/google_update_settings_unittest.cc",
     "../browser/google/google_update_win_unittest.cc",
     "../browser/history/android/android_cache_database_unittest.cc",
     "../browser/history/android/android_history_provider_service_unittest.cc",
     "../browser/history/android/android_provider_backend_unittest.cc",
@@ skipping 2045 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }