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

net/proxy/proxy_service.h

Index: net/proxy/proxy_service.h
diff --git a/net/proxy/proxy_service.h b/net/proxy/proxy_service.h
index e37b959d17bbf6652e4b844ab2b9ac5610dcc0bb..f8c866ce0057e372f35fc4c70c2662ed956a00d5 100644
--- a/net/proxy/proxy_service.h
+++ b/net/proxy/proxy_service.h
@@ -14,6 +14,7 @@
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/non_thread_safe.h"
 #include "net/base/completion_callback.h"
+#include "net/base/load_states.h"
 #include "net/base/net_export.h"
 #include "net/base/net_log.h"
 #include "net/base/network_change_notifier.h"
@@ -105,6 +106,9 @@ class NET_EXPORT ProxyService : public NetworkChangeNotifier::IPAddressObserver,
   // Call this method with a non-null |pac_request| to cancel the PAC request.
   void CancelPacRequest(PacRequest* pac_request);
 
+  // Returns the LoadState for this |pac_request| which must be non-NULL.
+  LoadState GetLoadState(const PacRequest* pac_request) const;
+
   // Sets the ProxyScriptFetcher and DhcpProxyScriptFetcher dependencies. This
   // is needed if the ProxyResolver is of type ProxyResolverWithoutFetch.
   // ProxyService takes ownership of both objects.