Fix --host-rules command switch.

net/http/http_stream_factory_impl_job.cc

Index: net/http/http_stream_factory_impl_job.cc
diff --git a/net/http/http_stream_factory_impl_job.cc b/net/http/http_stream_factory_impl_job.cc
index 1efd1cc9b8a0829fb46303a6a04722e62be45916..239c2b1a91d479fbe6e08d83efd2b08a25c00083 100644
--- a/net/http/http_stream_factory_impl_job.cc
+++ b/net/http/http_stream_factory_impl_job.cc
@@ -457,6 +457,9 @@ int HttpStreamFactoryImpl::Job::DoResolveProxy() {
   origin_ = HostPortPair(request_info_.url.HostNoBrackets(),
                          request_info_.url.EffectiveIntPort());
 
+  origin_url_ = HttpStreamFactory::ApplyHostMappingRules(
+      request_info_.url, &origin_);
+
   if (request_info_.load_flags & LOAD_BYPASS_PROXY) {
     proxy_info_.UseDirect();
     return OK;
@@ -576,7 +579,11 @@ int HttpStreamFactoryImpl::Job::DoInitConnection() {
 
   if (IsPreconnecting()) {
     return ClientSocketPoolManager::PreconnectSocketsForHttpRequest(
-        request_info_,
+        origin_url_,
+        request_info_.referrer,
+        request_info_.extra_headers,
+        request_info_.load_flags,
+        request_info_.priority,
         session_,
         proxy_info_,
         ShouldForceSpdySSL(),
@@ -587,7 +594,11 @@ int HttpStreamFactoryImpl::Job::DoInitConnection() {
         num_streams_);
   } else {
     return ClientSocketPoolManager::InitSocketHandleForHttpRequest(
-        request_info_,
+        origin_url_,
+        request_info_.referrer,
+        request_info_.extra_headers,
+        request_info_.load_flags,
+        request_info_.priority,
         session_,
         proxy_info_,
         ShouldForceSpdySSL(),