Convert WindowOpenDisposition to an enum class.

content/browser/webui/generic_handler.cc

 // 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.
 
 #include "content/browser/webui/generic_handler.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/values.h"
@@ skipping 29 matching lines @@
   CHECK(args->GetBoolean(3, &alt_key));
   CHECK(args->GetBoolean(4, &ctrl_key));
   CHECK(args->GetBoolean(5, &meta_key));
   CHECK(args->GetBoolean(6, &shift_key));
 
   CHECK(button == 0.0 || button == 1.0);
   bool middle_button = (button == 1.0);
 
   WindowOpenDisposition disposition = ui::DispositionFromClick(
       middle_button, alt_key, ctrl_key, meta_key, shift_key);
-  if (disposition == CURRENT_TAB && target_string == "_blank")
-    disposition = NEW_FOREGROUND_TAB;
+  if (disposition == WindowOpenDisposition::CURRENT_TAB &&
+      target_string == "_blank")
+    disposition = WindowOpenDisposition::NEW_FOREGROUND_TAB;
 
   web_ui()->GetWebContents()->OpenURL(OpenURLParams(GURL(url_string),
                                                     Referrer(),
                                                     disposition,
                                                     ui::PAGE_TRANSITION_LINK,
                                                     false));
 
   // This may delete us!
 }
 
 }  // namespace content