Use libevent, second try. Changes this time:...

build/SConscript.main

 # Copyright (c) 2006-2008 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 os
 import shutil
 import sys
 
 
 p = ARGUMENTS.get('PROGRESS')
@@ skipping 45 matching lines @@
     THIRD_PARTY_DIR       = '#/$BUILD_TYPE/third_party',
     V8_DIR                = '#/$BUILD_TYPE/v8',
     WEBKIT_DIR            = '#/$BUILD_TYPE/webkit',
 
     GTEST_DIR             = '$TESTING_DIR/gtest',
 
     BSDIFF_DIR            = '$THIRD_PARTY_DIR/bsdiff',
     BSPATCH_DIR           = '$THIRD_PARTY_DIR/bspatch',
     BZIP2_DIR             = '$THIRD_PARTY_DIR/bzip2',
     ICU38_DIR             = '$THIRD_PARTY_DIR/icu38',
+    LIBEVENT_DIR          = '$THIRD_PARTY_DIR/libevent',
     LIBJPEG_DIR           = '$THIRD_PARTY_DIR/libjpeg',
     LIBPNG_DIR            = '$THIRD_PARTY_DIR/libpng',
     LIBXML_DIR            = '$THIRD_PARTY_DIR/libxml',
     LIBXSLT_DIR           = '$THIRD_PARTY_DIR/libxslt',
     LZMA_SDK_DIR          = '$THIRD_PARTY_DIR/lzma_sdk',
     MODP_B64_DIR          = '$THIRD_PARTY_DIR/modp_b64',
     NPAPI_DIR             = '$THIRD_PARTY_DIR/npapi',
     ZLIB_DIR              = '$THIRD_PARTY_DIR/zlib',
 
     THIRD_PARTY_WEBKIT_DIR = '$THIRD_PARTY_DIR/WebKit',
@@ skipping 417 matching lines @@
       '$MODP_B64_DIR/SConscript',
       '$ZLIB_DIR/SConscript',
   ])
   # Temporary until we get these building on Mac.
   if env['PLATFORM'] != 'darwin':
     sconscripts.extend([
       '$LIBJPEG_DIR/SConscript',
       '$LIBXML_DIR/SConscript',
       '$LIBXSLT_DIR/SConscript',
     ])
+  if env['PLATFORM'] == 'posix':
+    sconscripts.extend([
+      '$LIBEVENT_DIR/SConscript',
+    ])
   # This is temporary until we get this lib to build on other platforms.
   if env['PLATFORM'] == 'win32':
     sconscripts.extend([
         '$BSPATCH_DIR/SConscript',
     ])
 
 if LoadComponent('v8') and env.Dir('#/../v8').exists():
   env.SConscript('SConscript.v8',
                  exports=['env'])
 
@@ skipping 26 matching lines @@
     initial_indent = ' '*32,
     subsequent_indent = ' '*32,
   )
   components = tw.fill(', '.join(components))
 
   Help(help_fmt % components)
 
 
 Import('build_component')
 Default(build_component)