Tracing for NavigationHandle lifetime and state.

chrome/browser/supervised_user/supervised_user_navigation_throttle.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_NAVIGATION_THROTTLE_H_
 #define CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_NAVIGATION_THROTTLE_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/supervised_user/supervised_user_url_filter.h"
 #include "chrome/browser/supervised_user/supervised_users.h"
 #include "components/supervised_user_error_page/supervised_user_error_page.h"
 #include "content/public/browser/navigation_throttle.h"
 
 class SupervisedUserNavigationThrottle : public content::NavigationThrottle {
  public:
   // Returns a new throttle for the given navigation, or nullptr if no
   // throttling is required.
   static std::unique_ptr<SupervisedUserNavigationThrottle>
   MaybeCreateThrottleFor(content::NavigationHandle* navigation_handle);
 
   ~SupervisedUserNavigationThrottle() override;
 
   // content::NavigationThrottle implementation:
   ThrottleCheckResult WillStartRequest() override;
   ThrottleCheckResult WillRedirectRequest() override;
+  const char* GetNameForLogging() override;
 
  private:
   SupervisedUserNavigationThrottle(
       content::NavigationHandle* navigation_handle);
 
   // Checks the current URL for the navigation. If called from
   // WillRedirectRequest, checks the URL being redirected to, not the original
   // URL.
   ThrottleCheckResult CheckURL();
 
@@ skipping 17 matching lines @@
 
   const SupervisedUserURLFilter* url_filter_;
   bool deferred_;
   SupervisedUserURLFilter::FilteringBehavior behavior_;
   base::WeakPtrFactory<SupervisedUserNavigationThrottle> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserNavigationThrottle);
 };
 
 #endif  // CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_NAVIGATION_THROTTLE_H_