[Mac] Organize all tab/tab strip files into chrome/browser/ui/cocoa/tabs/....

chrome/browser/ui/cocoa/tab_controller_target.h

-// Copyright (c) 2009 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_COCOA_TAB_CONTROLLER_TARGET_H_
-#define CHROME_BROWSER_UI_COCOA_TAB_CONTROLLER_TARGET_H_
-#pragma once
-
-#include "chrome/browser/tabs/tab_strip_model.h"
-
-@class TabController;
-
-// A protocol to be implemented by a TabController's target.
-@protocol TabControllerTarget
-- (void)selectTab:(id)sender;
-- (void)closeTab:(id)sender;
-
-// Dispatch context menu commands for the given tab controller.
-- (void)commandDispatch:(TabStripModel::ContextMenuCommand)command
-          forController:(TabController*)controller;
-// Returns YES if the specificed command should be enabled for the given
-// controller.
-- (BOOL)isCommandEnabled:(TabStripModel::ContextMenuCommand)command
-           forController:(TabController*)controller;
-@end
-
-#endif  // CHROME_BROWSER_UI_COCOA_TAB_CONTROLLER_TARGET_H_