TaskManager: when shown or activated, select the last active tab.

chrome/browser/ui/views/new_task_manager_view.h

 // Copyright 2015 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_UI_VIEWS_NEW_TASK_MANAGER_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_NEW_TASK_MANAGER_VIEW_H_
 
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 85 matching lines @@
   NewTaskManagerView();
 
   static NewTaskManagerView* GetInstanceForTests();
 
   // Creates the child controls.
   void Init();
 
   // Initializes the state of the always-on-top setting as the window is shown.
   void InitAlwaysOnTopState();
 
-  // Activates the tab associated with the focused row.
-  void ActivateFocusedTab();
+  // Activates the tab associated with the selected row.
+  void ActivateSelectedTab();
+
+  // Selects the active tab in the specified browser window.
+  void SelectTaskOfActiveTab(Browser* browser);
 
   // Restores saved "always on top" state from a previous session.
   void RetrieveSavedAlwaysOnTopState();
 
   std::unique_ptr<TaskManagerTableModel> table_model_;
 
   std::unique_ptr<views::MenuRunner> menu_runner_;
 
   // We need to own the text of the menu, the Windows API does not copy it.
   base::string16 always_on_top_menu_text_;
 
   views::TableView* tab_table_;
   views::View* tab_table_parent_;
 
   // all possible columns, not necessarily visible
   std::vector<ui::TableColumn> columns_;
 
   // True when the Task Manager window should be shown on top of other windows.
   bool is_always_on_top_;
 
   DISALLOW_COPY_AND_ASSIGN(NewTaskManagerView);
 };
 
 }  // namespace task_management
 
 #endif  // CHROME_BROWSER_UI_VIEWS_NEW_TASK_MANAGER_VIEW_H_