Modify experimental identity flow to display scope descriptions and details.

chrome/browser/extensions/permissions_updater.h

Index: chrome/browser/extensions/permissions_updater.h
diff --git a/chrome/browser/extensions/permissions_updater.h b/chrome/browser/extensions/permissions_updater.h
index 863e620d5c9824fb22d543c329c87731c68d1926..3066c183aa9af79319476b726fc5b16d3bd4c404 100644
--- a/chrome/browser/extensions/permissions_updater.h
+++ b/chrome/browser/extensions/permissions_updater.h
@@ -42,7 +42,8 @@ class PermissionsUpdater {
 
   // Adds all permissions in the |extension|'s active permissions to its
   // granted permission set.
-  void GrantActivePermissions(const Extension* extension);
+  void GrantActivePermissions(const Extension* extension,
+                              bool record_oauth2_grant);
 
   // Sets the |extension|'s active permissions to |permissions|.
   void UpdateActivePermissions(const Extension* extension,
@@ -54,6 +55,9 @@ class PermissionsUpdater {
     REMOVED,
   };
 
+  // Records the oauth2 grant for the scopes specified in |permissions|.
+  void RecordOAuth2Grant(const Extension* extension);
+
   // Dispatches specified event to the extension.
   void DispatchEvent(const std::string& extension_id,
                      const char* event_name,