Tracing for NavigationHandle lifetime and state.

content/browser/browsing_data/clear_site_data_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 "content/browser/browsing_data/clear_site_data_throttle.h"
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/memory/ptr_util.h"
@@ skipping 101 matching lines @@
 
   return clearing_in_progress_ ? DEFER : PROCEED;
 }
 
 ClearSiteDataThrottle::ThrottleCheckResult
 ClearSiteDataThrottle::WillProcessResponse() {
   HandleHeader();
   return clearing_in_progress_ ? DEFER : PROCEED;
 }
 
+const char* ClearSiteDataThrottle::GetNameForLogging() {
+  return "ClearSiteDataThrottle";
+}
+
 void ClearSiteDataThrottle::HandleHeader() {
   NavigationHandleImpl* handle =
       static_cast<NavigationHandleImpl*>(navigation_handle());
   const net::HttpResponseHeaders* headers = handle->GetResponseHeaders();
 
   if (!headers || !headers->HasHeader(kClearSiteDataHeader))
     return;
 
   // Only accept the header on secure origins.
   if (!IsOriginSecure(current_url_)) {
@@ skipping 141 matching lines @@
 
   UMA_HISTOGRAM_CUSTOM_TIMES("Navigation.ClearSiteData.Duration",
                              base::TimeTicks::Now() - clearing_started_,
                              base::TimeDelta::FromMilliseconds(1),
                              base::TimeDelta::FromSeconds(1), 50);
 
   navigation_handle()->Resume();
 }
 
 }  // namespace content