[WIP] make GURL::path() return a StringPiece

net/http/http_auth_controller.cc

Index: net/http/http_auth_controller.cc
diff --git a/net/http/http_auth_controller.cc b/net/http/http_auth_controller.cc
index 78e5a0354beec639b911260a6b9621ba2aeeb727..2012a603fe0e639d49a8b7fa1390d9076d7417e8 100644
--- a/net/http/http_auth_controller.cc
+++ b/net/http/http_auth_controller.cc
@@ -130,12 +130,12 @@ HttpAuthController::HttpAuthController(
     : target_(target),
       auth_url_(auth_url),
       auth_origin_(auth_url.GetOrigin()),
-      auth_path_(HttpAuth::AUTH_PROXY ? std::string() : auth_url.path()),
+      auth_path_(HttpAuth::AUTH_PROXY ? std::string()
+                                      : auth_url.path().as_string()),
       embedded_identity_used_(false),
       default_credentials_used_(false),
       http_auth_cache_(http_auth_cache),
-      http_auth_handler_factory_(http_auth_handler_factory) {
-}
+      http_auth_handler_factory_(http_auth_handler_factory) {}
 
 HttpAuthController::~HttpAuthController() {
   DCHECK(CalledOnValidThread());