Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/views/bookmarks/bookmark_bar_view.cc

 // 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.
 
 #include "chrome/browser/ui/views/bookmarks/bookmark_bar_view.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <limits>
@@ skipping 394 matching lines @@
     }
     return MenuButton::OnMousePressed(event);
   }
 
   bool IsTriggerableEventType(const ui::Event& e) override {
     // Bookmark folders handle normal menu button events (i.e., left click) as
     // well as clicks to open bookmarks in new tabs that would otherwise be
     // ignored.
     return BookmarkMenuButtonBase::IsTriggerableEventType(e) ||
            (e.IsMouseEvent() &&
-            ui::DispositionFromEventFlags(e.flags()) != CURRENT_TAB);
+            ui::DispositionFromEventFlags(e.flags()) !=
+                WindowOpenDisposition::CURRENT_TAB);
   }
 
  private:
   std::unique_ptr<gfx::SlideAnimation> show_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkFolderButton);
 };
 
 // OverflowButton (chevron) --------------------------------------------------
 
@@ skipping 1748 matching lines @@
     return;
   apps_page_shortcut_->SetVisible(visible);
   UpdateBookmarksSeparatorVisibility();
   LayoutAndPaint();
 }
 
 void BookmarkBarView::OnShowManagedBookmarksPrefChanged() {
   if (UpdateOtherAndManagedButtonsVisibility())
     LayoutAndPaint();
 }