Tracing for NavigationHandle lifetime and state.

chrome/browser/supervised_user/supervised_user_google_auth_navigation_throttle.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/supervised_user/supervised_user_google_auth_navigation_throttle.h"
 
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/supervised_user/child_accounts/child_account_service.h"
@@ skipping 39 matching lines @@
 content::NavigationThrottle::ThrottleCheckResult
 SupervisedUserGoogleAuthNavigationThrottle::WillStartRequest() {
   return WillStartOrRedirectRequest();
 }
 
 content::NavigationThrottle::ThrottleCheckResult
 SupervisedUserGoogleAuthNavigationThrottle::WillRedirectRequest() {
   return WillStartOrRedirectRequest();
 }
 
+const char* SupervisedUserGoogleAuthNavigationThrottle::GetNameForLogging() {
+  return "SupervisedUserGoogleAuthNavigationThrottle";
+}
+
 content::NavigationThrottle::ThrottleCheckResult
 SupervisedUserGoogleAuthNavigationThrottle::WillStartOrRedirectRequest() {
   const GURL& url = navigation_handle()->GetURL();
   if (!google_util::IsGoogleSearchUrl(url) &&
       !google_util::IsGoogleHomePageUrl(url) &&
       !google_util::IsYoutubeDomainUrl(url, google_util::ALLOW_SUBDOMAIN,
                                        google_util::ALLOW_NON_STANDARD_PORTS)) {
     return content::NavigationThrottle::PROCEED;
   }
 
@@ skipping 71 matching lines @@
   if (reauth_successful) {
     // If reauthentication was not successful, wait until the cookies are
     // refreshed, which will call us back separately.
     return;
   }
 
   // Otherwise cancel immediately.
   navigation_handle()->CancelDeferredNavigation(
       content::NavigationThrottle::CANCEL_AND_IGNORE);
 }