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

content/browser/loader/async_revalidation_manager_unittest.cc

Index: content/browser/loader/async_revalidation_manager_unittest.cc
diff --git a/content/browser/loader/async_revalidation_manager_unittest.cc b/content/browser/loader/async_revalidation_manager_unittest.cc
index 0bb7d00aecdd64d4d630ea71ea9665649e84ed89..1587c620aa45b0256b0427275270bfc8c542805a 100644
--- a/content/browser/loader/async_revalidation_manager_unittest.cc
+++ b/content/browser/loader/async_revalidation_manager_unittest.cc
@@ -131,7 +131,7 @@ class TestURLRequestJobFactory : public net::URLRequestJobFactory {
       const std::string& scheme,
       net::URLRequest* request,
       net::NetworkDelegate* network_delegate) const override {
-    std::string path = request->url().path();
+    base::StringPiece path = request->url().path();
     if (base::StartsWith(path, "/async-revalidate",
                          base::CompareCase::SENSITIVE)) {
       return new AsyncRevalidationRequiredURLRequestTestJob(request,