Implementation for switching between recently used tabs using ctrl tilde or quoteleft.

chrome/browser/tabs/tab_mru_list_manager.h

Index: chrome/browser/tabs/tab_mru_list_manager.h
diff --git a/chrome/browser/tabs/tab_mru_list_manager.h b/chrome/browser/tabs/tab_mru_list_manager.h
new file mode 100644
index 0000000000000000000000000000000000000000..45bbc7b61b62fd2a6d8eb4f3cc1cb95203405085
--- /dev/null
+++ b/chrome/browser/tabs/tab_mru_list_manager.h
@@ -0,0 +1,37 @@
+// 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.
+
+#ifndef CHROME_BROWSER_TABS_TAB_MRU_LIST_MANAGER_H_

[sky, 2012/05/25 17:56:52]

This should be in chrome/browser/ui/tabs.

[NaveenBobbili (Motorola), 2012/05/29 11:41:05]

Done.

[NaveenBobbili (Motorola), 2012/05/29 11:41:05]

Done.

+#define CHROME_BROWSER_TABS_TAB_MRU_LIST_MANAGER_H_
+#pragma once
+
+#include <list>
+
+class TabContentsWrapper;
+////////////////////////////////////////////////////////////////////////////////
+//
+// TabMRUListManager
+//
+// This is a list that manages the tabs that are in a tab strip as per the most
+// recently used priority order.
+//
+////////////////////////////////////////////////////////////////////////////////
+class TabMRUListManager {

[sky, 2012/05/25 17:56:52]

TabMRUListManager should be a TabStripModelObserver.

[NaveenBobbili (Motorola), 2012/05/29 11:41:05]

Done.

+ public:
+  virtual ~TabMRUListManager();

[sky, 2012/05/25 17:56:52]

no virtual

+
+  void ActivateContents(TabContentsWrapper* new_contents);
+  void AppendContents(TabContentsWrapper* new_contents);
+  void ClearContents();
+  TabContentsWrapper* GetNextMRUTab();
+  void RemoveContents(TabContentsWrapper* removed_contents);
+  void ReplaceContents(
+      TabContentsWrapper* old_contents, TabContentsWrapper* new_contents);
+
+ private:
+  // List that maintains the tab indices in the most recently visited order
+  typedef std::list<TabContentsWrapper*> TabsMRUList;
+  TabsMRUList tabs_mru_list_;
+};

[sky, 2012/05/25 17:56:52]

DISALLOW_COPY_AND_ASSIGN

+#endif // CHROME_BROWSER_TABS_TAB_MRU_LIST_MANAGER_H_

[sky, 2012/05/25 17:56:52]

newline between 36/67.