Mac. Build bookmark tooltips more intelligently, not showing title if same as URL.

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_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_BOOKMARKS_BOOKMARK_BAR_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_BAR_CONTROLLER_H_
 #pragma once
 
 #import <Cocoa/Cocoa.h>
 #include <map>
@@ skipping 331 matching lines @@
 - (IBAction)copyBookmark:(id)sender;
 - (IBAction)pasteBookmark:(id)sender;
 - (IBAction)deleteBookmark:(id)sender;
 // From a context menu over the bar, ...
 - (IBAction)openAllBookmarks:(id)sender;
 - (IBAction)openAllBookmarksNewWindow:(id)sender;
 - (IBAction)openAllBookmarksIncognitoWindow:(id)sender;
 // Or from a context menu over either the bar or a button.
 - (IBAction)addPage:(id)sender;
 - (IBAction)addFolder:(id)sender;
-
+// Make a relevant tooltip string for node.
+- (NSString*)tooltipForNode:(const BookmarkNode*)node;
 @end
 
 // Redirects from BookmarkBarBridge, the C++ object which glues us to
 // the rest of Chromium.  Internal to BookmarkBarController.
 @interface BookmarkBarController(BridgeRedirect)
 - (void)loaded:(BookmarkModel*)model;
 - (void)beingDeleted:(BookmarkModel*)model;
 - (void)nodeAdded:(BookmarkModel*)model
            parent:(const BookmarkNode*)oldParent index:(int)index;
 - (void)nodeChanged:(BookmarkModel*)model
@@ skipping 36 matching lines @@
 
 // The following are for testing purposes only and are not used internally.
 - (NSMenu *)menuForFolderNode:(const BookmarkNode*)node;
 - (NSMenu*)buttonContextMenu;
 - (void)setButtonContextMenu:(id)menu;
 // Set to YES in order to prevent animations.
 - (void)setIgnoreAnimations:(BOOL)ignore;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_BAR_CONTROLLER_H_