Start using the proxy resolve IPC for plugins....

chrome/browser/browser.scons

 # 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('env')
 
 env = env.Clone()
 
 env.SConscript([
     '$CHROME_DIR/third_party/hunspell/using_hunspell.scons',
@@ skipping 412 matching lines @@
     'net/dns_global.cc',
     'net/dns_global.h',
     'net/dns_host_info.cc',
     'net/dns_host_info.h',
     'net/dns_master.cc',
     'net/dns_master.h',
     'net/dns_slave.cc',
     'net/dns_slave.h',
     'net/referrer.cc',
     'net/referrer.h',
+    'net/resolve_proxy_msg_helper.cc',
+    'net/resolve_proxy_msg_helper.h',
     'net/sdch_dictionary_fetcher.cc',
     'net/sdch_dictionary_fetcher.h',
     'net/url_fetcher.cc',
     'net/url_fetcher.h',
     'net/url_fetcher_protect.cc',
     'net/url_fetcher_protect.h',
     'net/url_fixer_upper.cc',
     'net/url_fixer_upper.h',
   ]),
   MSVSFilter('RLZ', [
@@ skipping 296 matching lines @@
       'jankometer.cc',
       'js_before_unload_handler.cc',
       'jsmessage_box_handler.cc',
       'login_prompt.cc',
       'memory_details.cc',
       'metrics/metrics_service.cc',
       'modal_html_dialog_delegate.cc',
       'net/dns_global.cc',
       'net/dns_master.cc',
       'net/dns_slave.cc',
+      'net/resolve_proxy_msg_helper.cc',
       'google_update.cc',
       'password_manager/encryptor.cc',
       'password_manager/ie7_password.cc',
       'password_manager/password_manager.cc',
       'plugin_installer.cc',
       'plugin_process_host.cc',
       'plugin_service.cc',
       'printing/page_overlays.cc',
       'printing/print_job.cc',
       'printing/print_job_manager.cc',
@@ skipping 178 matching lines @@
 
 xmldoc_tool_list = [
     MSVSTool('VCCLCompilerTool',
              XMLDocumentationFileName=('$(IntDir)/$(InputName)1.xdc'),
              ObjectFile='$(IntDir)/$(InputName)1.obj'),
 ]
 
 for filename in xmldoc_files:
   p.AddFileConfig(filename, 'Debug|Win32', xmldoc_tool_list)
   p.AddFileConfig(filename, 'Release|Win32', xmldoc_tool_list)