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

chrome/browser/browser_about_handler.cc

Index: chrome/browser/browser_about_handler.cc
diff --git a/chrome/browser/browser_about_handler.cc b/chrome/browser/browser_about_handler.cc
index 30899a53a8e80f8df22ad8feaa40252a50c1c953..87c82e703fbb28c09ca56f756b1336aff845a034 100644
--- a/chrome/browser/browser_about_handler.cc
+++ b/chrome/browser/browser_about_handler.cc
@@ -67,10 +67,10 @@ bool WillHandleBrowserAboutURL(GURL* url,
     // Otherwise, it's handled by the uber settings page.
     if (base::FeatureList::IsEnabled(features::kMaterialDesignExtensions)) {
       host = chrome::kChromeUIExtensionsHost;
-      path = url->path();
+      path = url->path().as_string();
     } else {
       host = chrome::kChromeUIUberHost;
-      path = chrome::kChromeUIExtensionsHost + url->path();
+      path = chrome::kChromeUIExtensionsHost + url->path().as_string();
     }
   // Redirect chrome://settings/extensions (legacy URL).
   } else if (host == chrome::kChromeUISettingsHost &&
@@ -89,10 +89,10 @@ bool WillHandleBrowserAboutURL(GURL* url,
     // host.
     if (MdHistoryUI::IsEnabled(Profile::FromBrowserContext(browser_context))) {
       host = chrome::kChromeUIHistoryHost;
-      path = url->path();
+      path = url->path().as_string();
     } else {
       host = chrome::kChromeUIUberHost;
-      path = chrome::kChromeUIHistoryHost + url->path();
+      path = chrome::kChromeUIHistoryHost + url->path().as_string();
     }
 #endif
   // Redirect chrome://settings, unless MD settings is enabled.
@@ -103,7 +103,7 @@ bool WillHandleBrowserAboutURL(GURL* url,
       host = chrome::kChromeUISettingsFrameHost;
     } else {
       host = chrome::kChromeUIUberHost;
-      path = chrome::kChromeUISettingsHost + url->path();
+      path = chrome::kChromeUISettingsHost + url->path().as_string();
     }
   // Redirect chrome://help, unless MD settings is enabled.
   } else if (host == chrome::kChromeUIHelpHost) {
@@ -116,7 +116,7 @@ bool WillHandleBrowserAboutURL(GURL* url,
         path = chrome::kChromeUIHelpHost;
     } else {
       host = chrome::kChromeUIUberHost;
-      path = chrome::kChromeUIHelpHost + url->path();
+      path = chrome::kChromeUIHelpHost + url->path().as_string();
     }
   }