AU: Always retry on failed connections, even manual checks.

This is a temporary workaround for a bug discovered w/ httpdate and
the oobe.

BUG=9736
TEST=unittests

Change-Id: Ic7bbc867be0298d01686a9ea56ce9b012def5f7b

Review URL: http://codereview.chromium.org/5395004
diff --git a/update_attempter.cc b/update_attempter.cc
index 7c958cb..529338a 100644
--- a/update_attempter.cc
+++ b/update_attempter.cc
@@ -164,11 +164,9 @@
   // Actions:
   LibcurlHttpFetcher* update_check_fetcher =
       new LibcurlHttpFetcher(GetProxyResolver());
-  // If this is an automatic check, try harder to connect to the network. See
-  // comment in libcurl_http_fetcher.cc.
-  if (!obey_proxies) {
-    update_check_fetcher->set_no_network_max_retries(3);
-  }
+  // Try harder to connect to the network. See comment in
+  // libcurl_http_fetcher.cc.
+  update_check_fetcher->set_no_network_max_retries(3);
   shared_ptr<OmahaRequestAction> update_check_action(
       new OmahaRequestAction(prefs_,
                              omaha_request_params_,