Tracing for NavigationHandle lifetime and state.

components/navigation_interception/intercept_navigation_throttle.cc

 // Copyright 2015 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 "components/navigation_interception/intercept_navigation_throttle.h"
 
 #include "components/navigation_interception/navigation_params.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/navigation_handle.h"
 
@@ skipping 44 matching lines @@
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   return CheckIfShouldIgnoreNavigation(false);
 }
 
 content::NavigationThrottle::ThrottleCheckResult
 InterceptNavigationThrottle::WillRedirectRequest() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   return CheckIfShouldIgnoreNavigation(true);
 }
 
+const char* InterceptNavigationThrottle::GetNameForLogging() {
+  return "InterceptNavigationThrottle";
+}
+
 content::NavigationThrottle::ThrottleCheckResult
 InterceptNavigationThrottle::CheckIfShouldIgnoreNavigation(bool is_redirect) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   NavigationParams navigation_params(
       navigation_handle()->GetURL(), navigation_handle()->GetReferrer(),
       navigation_handle()->HasUserGesture(), navigation_handle()->IsPost(),
       navigation_handle()->GetPageTransition(), is_redirect,
       navigation_handle()->IsExternalProtocol(), true,
       navigation_handle()->GetBaseURLForDataURL());
 
@@ skipping 48 matching lines @@
   CHECK(handle);
   if (should_ignore_navigation) {
     navigation_handle()->CancelDeferredNavigation(
         content::NavigationThrottle::CANCEL_AND_IGNORE);
   } else {
     handle->Resume();
   }
 }
 
 }  // namespace navigation_interception