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

chrome/browser/devtools/device/port_forwarding_browsertest.cc

Index: chrome/browser/devtools/device/port_forwarding_browsertest.cc
diff --git a/chrome/browser/devtools/device/port_forwarding_browsertest.cc b/chrome/browser/devtools/device/port_forwarding_browsertest.cc
index 475c52c1fb9d18dc25fa53661c3e5a2a4a00f6d0..cb6efa935a9bfe083fe9070d926fbf05fe92dfbd 100644
--- a/chrome/browser/devtools/device/port_forwarding_browsertest.cc
+++ b/chrome/browser/devtools/device/port_forwarding_browsertest.cc
@@ -92,8 +92,8 @@ IN_PROC_BROWSER_TEST_F(PortForwardingTest,
   GURL original_url = embedded_test_server()->GetURL(kPortForwardingTestPage);
 
   std::string forwarding_port("8000");
-  GURL forwarding_url(original_url.scheme() + "://" +
-      original_url.host() + ":" + forwarding_port + original_url.path());
+  GURL forwarding_url(original_url.scheme() + "://" + original_url.host() +
+                      ":" + forwarding_port + original_url.path().as_string());
 
   PrefService* prefs = profile->GetPrefs();
   prefs->SetBoolean(prefs::kDevToolsPortForwardingEnabled, true);
@@ -163,8 +163,8 @@ IN_PROC_BROWSER_TEST_F(PortForwardingDisconnectTest, DisconnectOnRelease) {
   GURL original_url = embedded_test_server()->GetURL(kPortForwardingTestPage);
 
   std::string forwarding_port("8000");
-  GURL forwarding_url(original_url.scheme() + "://" +
-      original_url.host() + ":" + forwarding_port + original_url.path());
+  GURL forwarding_url(original_url.scheme() + "://" + original_url.host() +
+                      ":" + forwarding_port + original_url.path().as_string());
 
   PrefService* prefs = profile->GetPrefs();
   prefs->SetBoolean(prefs::kDevToolsPortForwardingEnabled, true);