[Mac] First pass at multiple selection in the tabstrip.

chrome/browser/ui/cocoa/tabs/tab_window_controller.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_UI_COCOA_TABS_TAB_WINDOW_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_TABS_TAB_WINDOW_CONTROLLER_H_
 #pragma once
 
 // A class acting as the Objective-C window controller for a window that has
 // tabs which can be dragged around. Tabs can be re-arranged within the same
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 // Number of tabs in the tab strip. Useful, for example, to know if we're
 // dragging the only tab in the window. This includes pinned tabs (both live
 // and not).
 - (NSInteger)numberOfTabs;
 
 // YES if there are tabs in the tab strip which have content, allowing for
 // the notion of tabs in the tab strip that are placeholders but currently have
 // no content.
 - (BOOL)hasLiveTabs;
 
-// Return the view of the selected tab.
-- (NSView *)selectedTabView;
+// Return the view of the active tab.
+- (NSView*)activeTabView;
 
-// The title of the selected tab.
-- (NSString*)selectedTabTitle;
+// The title of the active tab.
+- (NSString*)activeTabTitle;
 
 // Called to check whether or not this controller's window has a tab strip (YES
 // if it does, NO otherwise). The default implementation returns YES.
 - (BOOL)hasTabStrip;
 
 // Returns YES if the tab strip lives in the window content area alongside the
 // tab contents. Returns NO if the tab strip is outside the window content
 // area, along the top of the window.
 - (BOOL)useVerticalTabs;
 
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 // Toggles from one display mode of the tab strip to another. Will automatically
 // call -layoutSubviews to reposition other content.
 - (void)toggleTabStripDisplayMode;
 
 // Called when the size of the window content area has changed. Override to
 // position specific views. Base class implementation does nothing.
 - (void)layoutSubviews;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_TABS_TAB_WINDOW_CONTROLLER_H_