Add new text for indicating we are resolving hosts during proxy resolution.

net/proxy/proxy_resolver_winhttp.cc

Index: net/proxy/proxy_resolver_winhttp.cc
diff --git a/net/proxy/proxy_resolver_winhttp.cc b/net/proxy/proxy_resolver_winhttp.cc
index 2581236550d7b987793c3b9e38be44de06a14356..ecfc22f2437ad437df757f41a4a059fd9cb7a37c 100644
--- a/net/proxy/proxy_resolver_winhttp.cc
+++ b/net/proxy/proxy_resolver_winhttp.cc
@@ -124,6 +124,11 @@ void ProxyResolverWinHttp::CancelRequest(RequestHandle request) {
   NOTREACHED();
 }
 
+LoadState ProxyResolverWinHttp::GetLoadState(RequestHandle request) const {
+  NOTREACHED();
+  return LOAD_STATE_IDLE;
+}
+
 void ProxyResolverWinHttp::CancelSetPacScript() {
   NOTREACHED();
 }