Reland: Use native (optimized) functions for byte order conversion.

webrtc/base/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("//build/config/crypto.gni")
 import("//build/config/ui.gni")
@@ skipping 253 matching lines @@
       "$root_out_dir/ucrtbase${vcrt_suffix}.dll",
     ]
     if (is_asan) {
       if (current_cpu == "x64") {
         data += [ "$clang_base_path/lib/clang/$clang_version/lib/windows/clang_rt.asan_dynamic-x86_64.dll" ]
       } else {
         data += [ "$clang_base_path/lib/clang/$clang_version/lib/windows/clang_rt.asan_dynamic-i386.dll" ]
       }
     }
   }
+  if (is_nacl) {
+    deps += [ "//native_client_sdk/src/libraries/nacl_io" ]

[joachim, 2017/03/17 00:10:18]

This is required for including "netinet/in.h" in the native client case (to get
htons, etc).

+  }
 }
 
 config("enable_libevent_config") {
   defines = [ "WEBRTC_BUILD_LIBEVENT" ]
 }
 
 rtc_static_library("rtc_task_queue") {
   public_deps = [
     ":rtc_base_approved",
   ]
@@ skipping 597 matching lines @@
 
 if (is_android) {
   android_library("base_java") {
     java_files = [
       "java/src/org/webrtc/Logging.java",
       "java/src/org/webrtc/Size.java",
       "java/src/org/webrtc/ThreadUtils.java",
     ]
   }
 }