Tracing for NavigationHandle lifetime and state.

chrome/browser/supervised_user/supervised_user_navigation_throttle.cc

 // 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.
 
 #include "chrome/browser/supervised_user/supervised_user_navigation_throttle.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
@@ skipping 182 matching lines @@
 content::NavigationThrottle::ThrottleCheckResult
 SupervisedUserNavigationThrottle::WillStartRequest() {
   return CheckURL();
 }
 
 content::NavigationThrottle::ThrottleCheckResult
 SupervisedUserNavigationThrottle::WillRedirectRequest() {
   return CheckURL();
 }
 
+const char* SupervisedUserNavigationThrottle::GetNameForLogging() {
+  return "SupervisedUserNavigationThrottle";
+}
+
 void SupervisedUserNavigationThrottle::OnCheckDone(
     const GURL& url,
     SupervisedUserURLFilter::FilteringBehavior behavior,
     supervised_user_error_page::FilteringBehaviorReason reason,
     bool uncertain) {
   DCHECK_EQ(SupervisedUserURLFilter::INVALID, behavior_);
   // If we got a result synchronously, pass it back to ShowInterstitialIfNeeded.
   if (!deferred_)
     behavior_ = behavior;
 
@@ skipping 27 matching lines @@
   DCHECK(deferred_);
   deferred_ = false;
   navigation_handle()->Resume();
 }
 
 void SupervisedUserNavigationThrottle::Cancel() {
   DCHECK(deferred_);
   deferred_ = false;
   navigation_handle()->CancelDeferredNavigation(CANCEL);
 }