Add trace event for InMemoryURLIndex::PostRestoreFromCacheFileTask

chrome/browser/history/in_memory_url_index.cc

 // Copyright (c) 2012 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/history/in_memory_url_index.h"
 
+#include "base/debug/trace_event.h"
 #include "base/file_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/api/bookmarks/bookmark_service.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/history/history_notifications.h"
 #include "chrome/browser/history/history_service.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/history/url_database.h"
 #include "chrome/browser/history/url_index_private_data.h"
@@ skipping 202 matching lines @@
     for (URLRows::const_iterator row = details->rows.begin();
          row != details->rows.end(); ++row)
       needs_to_be_cached_ |= private_data_->DeleteURL(row->url());
   }
 }
 
 // Restoring from Cache --------------------------------------------------------
 
 void InMemoryURLIndex::PostRestoreFromCacheFileTask() {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  TRACE_EVENT0("browser", "InMemoryURLIndex::PostRestoreFromCacheFileTask");
 
   base::FilePath path;
   if (!GetCacheFilePath(&path) || shutdown_) {
     restored_ = true;
     if (restore_cache_observer_)
       restore_cache_observer_->OnCacheRestoreFinished(false);
     return;
   }
 
   scoped_refptr<URLIndexPrivateData> restored_private_data =
@@ skipping 93 matching lines @@
         base::Bind(DeleteCacheFile, path));
   }
 }
 
 void InMemoryURLIndex::OnCacheSaveDone(bool succeeded) {
   if (save_cache_observer_)
     save_cache_observer_->OnCacheSaveFinished(succeeded);
 }
 
 }  // namespace history