AU: Full proxy support

This CL Introduces a new proxy resolver that queries Chrome browser
for all URLs. This means the updater now works with Proxy
AutoConfiguration (PAC) files and automatic proxy detection.

BUG=chromium-os:9478
TEST=performed update, unittests

Review URL: http://codereview.chromium.org/6594025

Change-Id: I2c169aec06109e3eabc4011e0b536685dfd13f79
diff --git a/main.cc b/main.cc
index 9dae81a..48ea9f1 100755
--- a/main.cc
+++ b/main.cc
@@ -74,7 +74,6 @@
                                     DBUS_SERVICE_DBUS,
                                     DBUS_PATH_DBUS,
                                     DBUS_INTERFACE_DBUS);
-
   guint32 request_name_ret;
   if (!org_freedesktop_DBus_request_name(proxy,
                                          kUpdateEngineServiceName,
@@ -146,6 +145,7 @@
                        logging::DONT_LOCK_LOG_FILE,
                        logging::APPEND_TO_OLD_LOG_FILE);
 }
+
 }  // namespace {}
 }  // namespace chromeos_update_engine