Upstream "nsurl_util.{h,mm}" from Chrome on iOS repository.

net/BUILD.gn

 # Copyright (c) 2013 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/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//url/config.gni")
 
 # TODO(cjhopman): //build/config/android/rules.gni also imports grit_rule.gni.
@@ skipping 480 matching lines @@
     sources -= [ "disk_cache/blockfile/file_posix.cc" ]
     libs = [
       "CFNetwork.framework",
       "MobileCoreServices.framework",
       "Security.framework",
       "SystemConfiguration.framework",
       "resolv",
     ]
   }
 
+  if (is_ios || is_mac) {
+    sources += gypi_values.net_base_mac_ios_sources
+  }
+
   if (is_android) {
     # Add some Linux sources that were excluded by the filter, but which
     # are needed.
     set_sources_assignment_filter([])
     sources += [
       "base/platform_mime_util_linux.cc",
       "base/address_tracker_linux.cc",
       "base/address_tracker_linux.h",
     ]
     set_sources_assignment_filter(sources_assignment_filter)
@@ skipping 614 matching lines @@
   if (is_linux) {
     sources += gypi_values.net_linux_test_sources
     deps += [
       ":balsa",
       ":epoll_server",
       ":flip_in_mem_edsm_server_base",
       ":quic_base",
     ]
   }
 
+  if (is_mac || is_ios) {
+    sources += gypi_values.net_base_test_mac_ios_sources
+  }
+
   if (is_chromeos) {
     sources -= [
       "proxy/proxy_config_service_linux_unittest.cc",
     ]
   }
 
   if (is_android) {
     sources -= [
       # See bug http://crbug.com/344533.
       "disk_cache/blockfile/index_table_v3_unittest.cc",
@@ skipping 217 matching lines @@
   sources = [ "quic/quic_server_bin.cc" ]
   deps = [
     ":quic_tools",
     ":net",
     "//base",
     "//third_party/boringssl",
   ]
 }
 
 }  # !is_android && !is_win && !is_mac