Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/browser_instant_controller.cc

 // Copyright 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/browser_instant_controller.h"
 
 #include "base/bind.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/instant_service.h"
@@ skipping 88 matching lines @@
   browser_->search_model()->RemoveObserver(this);
 
   InstantService* instant_service =
       InstantServiceFactory::GetForProfile(profile());
   instant_service->RemoveObserver(this);
 }
 
 bool BrowserInstantController::OpenInstant(WindowOpenDisposition disposition,
                                            const GURL& url) {
   // Unsupported dispositions.
-  if (disposition == NEW_BACKGROUND_TAB || disposition == NEW_WINDOW ||
-      disposition == NEW_FOREGROUND_TAB)
+  if (disposition == WindowOpenDisposition::NEW_BACKGROUND_TAB ||
+      disposition == WindowOpenDisposition::NEW_WINDOW ||
+      disposition == WindowOpenDisposition::NEW_FOREGROUND_TAB)
     return false;
 
   // The omnibox currently doesn't use other dispositions, so we don't attempt
   // to handle them. If you hit this DCHECK file a bug and I'll (sky) add
   // support for the new disposition.
-  DCHECK(disposition == CURRENT_TAB) << disposition;
+  DCHECK(disposition == WindowOpenDisposition::CURRENT_TAB)
+      << static_cast<int>(disposition);
 
   const base::string16& search_terms =
       search::ExtractSearchTermsFromURL(profile(), url);
   EmbeddedSearchRequestParams request_params(url);
   if (search_terms.empty())
     return false;
 
   InstantSearchPrerenderer* prerenderer =
       GetInstantSearchPrerenderer(profile());
   if (prerenderer) {
@@ skipping 84 matching lines @@
       params.referrer = content::Referrer();
       params.transition_type = ui::PAGE_TRANSITION_RELOAD;
       contents->GetController().LoadURLWithParams(params);
     } else {
       // Reload the contents to ensure that it gets assigned to a
       // non-privileged renderer.
       TabReloader::Reload(contents);
     }
   }
 }