Add elevation to the managed mode navigation observer.

chrome/browser/managed_mode/managed_user_service.h

Index: chrome/browser/managed_mode/managed_user_service.h
diff --git a/chrome/browser/managed_mode/managed_user_service.h b/chrome/browser/managed_mode/managed_user_service.h
index 6dbcfa2210c8fa47980255ed904a9112f93ce7db..3225f393837fb86896020960323159ef56c4c906 100644
--- a/chrome/browser/managed_mode/managed_user_service.h
+++ b/chrome/browser/managed_mode/managed_user_service.h
@@ -45,6 +45,9 @@ class ManagedUserService : public ProfileKeyedService,
   bool ProfileIsManaged() const;
   bool IsElevated() const;
 
+  // Returns the elevation state for specific WebContents.
+  bool IsElevatedForWebContents(const content::WebContents* web_contents) const;
+
   static void RegisterUserPrefs(PrefRegistrySyncable* registry);
 
   // Returns the URL filter for the IO thread, for filtering network requests
@@ -85,6 +88,13 @@ class ManagedUserService : public ProfileKeyedService,
   // elevated state or the passphrase is empty).
   bool CanSkipPassphraseDialog();
 
+  // Checks if the passphrase dialog can be skipped (the profile is already in
+  // elevated state for the given WebContents or the passphrase is empty).
+  bool CanSkipPassphraseDialog(const content::WebContents* web_contents) const;
+
+  // Returns if the passphrase to authorize as the custodian is empty.
+  bool IsPassphraseEmpty() const;
+
   // Handles the request to authorize as the custodian of the managed user.
   void RequestAuthorization(content::WebContents* web_contents,
                             const PassphraseCheckedCallback& callback);
@@ -96,6 +106,7 @@ class ManagedUserService : public ProfileKeyedService,
       Browser* browser,
       const PassphraseCheckedCallback& callback);
 
+  // Set the elevation state for the profile.
   void SetElevated(bool is_elevated);
 
   // Add an elevation for a specific extension which allows the managed user to