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

net/http/http_network_transaction_unittest.cc

Index: net/http/http_network_transaction_unittest.cc
diff --git a/net/http/http_network_transaction_unittest.cc b/net/http/http_network_transaction_unittest.cc
index 546935e6e58840e5ac8653b0e0d43245ae6d7a53..9bcde1f44a6b0845b5c94f4b11a415640022e3c0 100644
--- a/net/http/http_network_transaction_unittest.cc
+++ b/net/http/http_network_transaction_unittest.cc
@@ -7121,6 +7121,11 @@ class CapturingProxyResolver : public ProxyResolver {
     NOTREACHED();
   }
 
+  virtual LoadState GetLoadState(RequestHandle request) const OVERRIDE {
+    NOTREACHED();
+    return LOAD_STATE_IDLE;
+  }
+
   virtual void CancelSetPacScript() {
     NOTREACHED();
   }