Tracing for NavigationHandle lifetime and state.

content/browser/browsing_data/clear_site_data_throttle.cc

Index: content/browser/browsing_data/clear_site_data_throttle.cc
diff --git a/content/browser/browsing_data/clear_site_data_throttle.cc b/content/browser/browsing_data/clear_site_data_throttle.cc
index eec778fefe8817f0cd238840f61ac4629ed37840..9799e1c7a06cd8c6a5ab2d1a59d2472a7f47c40e 100644
--- a/content/browser/browsing_data/clear_site_data_throttle.cc
+++ b/content/browser/browsing_data/clear_site_data_throttle.cc
@@ -119,6 +119,10 @@ ClearSiteDataThrottle::WillProcessResponse() {
   return clearing_in_progress_ ? DEFER : PROCEED;
 }
 
+const char* ClearSiteDataThrottle::GetNameForLogging() {
+  return "ClearSiteDataThrottle";
+}
+
 void ClearSiteDataThrottle::HandleHeader() {
   NavigationHandleImpl* handle =
       static_cast<NavigationHandleImpl*>(navigation_handle());