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

net/proxy/proxy_resolver.h

Index: net/proxy/proxy_resolver.h
diff --git a/net/proxy/proxy_resolver.h b/net/proxy/proxy_resolver.h
index 20c903d3707653494f7b1878116c8cc38efdcae4..8a1b17314f8eb1c12c0dc705f0709c907ec51cdb 100644
--- a/net/proxy/proxy_resolver.h
+++ b/net/proxy/proxy_resolver.h
@@ -11,6 +11,7 @@
 #include "base/string16.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/completion_callback.h"
+#include "net/base/load_states.h"
 #include "net/base/net_export.h"
 #include "net/proxy/proxy_resolver_script_data.h"
 
@@ -49,6 +50,9 @@ class NET_EXPORT_PRIVATE ProxyResolver {
   // Cancels |request|.
   virtual void CancelRequest(RequestHandle request) = 0;
 
+  // Gets the LoadState for |request|.
+  virtual LoadState GetLoadState(RequestHandle request) const = 0;
+
   // The PAC script backend can be specified to the ProxyResolver either via
   // URL, or via the javascript text itself.  If |expects_pac_bytes| is true,
   // then the ProxyResolverScriptData passed to SetPacScript() should