Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/cocoa/bookmarks/bookmark_menu_cocoa_controller.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_menu_cocoa_controller.h"
 
 #import "base/mac/foundation_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"  // IDC_BOOKMARK_MENU
 #import "chrome/browser/app_controller_mac.h"
@@ skipping 104 matching lines @@
   if (!browser) {
     browser = new Browser(Browser::CreateParams(bridge_->GetProfile()));
   }
   DCHECK(browser);
 
   if (!node || !browser)
     return; // shouldn't be reached
 
   chrome::OpenAll(NULL, browser, node, disposition, browser->profile());
 
-  if (disposition == NEW_FOREGROUND_TAB) {
+  if (disposition == WindowOpenDisposition::NEW_FOREGROUND_TAB) {
     content::RecordAction(UserMetricsAction("OpenAllBookmarks"));
-  } else if (disposition == NEW_WINDOW) {
+  } else if (disposition == WindowOpenDisposition::NEW_WINDOW) {
     content::RecordAction(UserMetricsAction("OpenAllBookmarksNewWindow"));
   } else {
     content::RecordAction(
         UserMetricsAction("OpenAllBookmarksIncognitoWindow"));
   }
 }
 
 - (IBAction)openBookmarkMenuItem:(id)sender {
   NSInteger tag = [sender tag];
   int identifier = tag;
   const BookmarkNode* node = [self nodeForIdentifier:identifier];
   DCHECK(node);
   if (!node)
     return;  // shouldn't be reached
 
   [self openURLForNode:node];
 }
 
 - (IBAction)openAllBookmarks:(id)sender {
-  [self openAll:[sender tag] withDisposition:NEW_FOREGROUND_TAB];
+  WindowOpenDisposition disposition = WindowOpenDisposition::NEW_FOREGROUND_TAB;
+  [self openAll:[sender tag] withDisposition:disposition];
 }
 
 - (IBAction)openAllBookmarksNewWindow:(id)sender {
-  [self openAll:[sender tag] withDisposition:NEW_WINDOW];
+  WindowOpenDisposition disposition = WindowOpenDisposition::NEW_WINDOW;
+  [self openAll:[sender tag] withDisposition:disposition];
 }
 
 - (IBAction)openAllBookmarksIncognitoWindow:(id)sender {
-  [self openAll:[sender tag] withDisposition:OFF_THE_RECORD];
+  WindowOpenDisposition disposition = WindowOpenDisposition::OFF_THE_RECORD;
+  [self openAll:[sender tag] withDisposition:disposition];
 }
 
 @end  // BookmarkMenuCocoaController