Add Perceived PageLoad Time (PPLT) metrics for Prerender Experiments,...

chrome/browser/tab_contents/tab_contents.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #pragma once
 
 #include <deque>
 #include <map>
@@ skipping 50 matching lines @@
 class DOMUI;
 class DownloadItem;
 class Extension;
 class FileSelectHelper;
 class InfoBarDelegate;
 class LoadNotificationDetails;
 class OmniboxSearchHint;
 class PluginInstallerInfoBarDelegate;
 class Profile;
 class PrerenderManager;
+class PrerenderPLTRecorder;
 struct RendererPreferences;
 class RenderViewHost;
 class SessionStorageNamespace;
 class SiteInstance;
 class SkBitmap;
 class TabContents;
 class TabContentsDelegate;
 class TabContentsSSLHelper;
 class TabContentsView;
 class URLPattern;
@@ skipping 1036 matching lines @@
 
   // AutocompleteHistoryManager.
   scoped_ptr<AutocompleteHistoryManager> autocomplete_history_manager_;
 
   // AutoFillManager.
   scoped_ptr<AutoFillManager> autofill_manager_;
 
   // PluginInstallerInfoBarDelegate, lazily created.
   scoped_ptr<PluginInstallerInfoBarDelegate> plugin_installer_;
 
+  // Prerender PageLoadTime Recorder.
+  scoped_ptr<PrerenderPLTRecorder> prerender_plt_recorder_;
+
   // TabContentsSSLHelper, lazily created.
   scoped_ptr<TabContentsSSLHelper> ssl_helper_;
 
   // FileSelectHelper, lazily created.
   scoped_ptr<FileSelectHelper> file_select_helper_;
 
   // Handles drag and drop event forwarding to extensions.
   BookmarkDrag* bookmark_drag_;
 
   // Handles downloading favicons.
@@ skipping 198 matching lines @@
   ObserverList<WebNavigationObserver> web_navigation_observers_;
 
   // Content restrictions, used to disable print/copy etc based on content's
   // (full-page plugins for now only) permissions.
   int content_restrictions_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContents);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_