SimpleCache: Add doom event to netlog

Review URL: https://codereview.chromium.org/442013002

Cr-Commit-Position: refs/heads/master@{#288633}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288633 0039d316-1c4b-4281-b951-d872f2087c98

net/disk_cache/simple/simple_entry_impl.cc

@@ -1297,6 +1297,7 @@ void SimpleEntryImpl::DoomOperationComplete(
     State state_to_restore,
     int result) {
   state_ = state_to_restore;
+  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_DOOM_END);
   if (!callback.is_null())
     callback.Run(result);
   RunNextOperationIfNeeded();