Convert WindowOpenDisposition to an enum class.

chrome/browser/sessions/session_restore_android.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/sessions/session_restore.h"
 
 #include <vector>
 
 #include "chrome/browser/android/tab_android.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 25 matching lines @@
   content::WebContents* new_web_contents = content::WebContents::Create(
       content::WebContents::CreateParams(context));
   int selected_index = session_tab.normalized_navigation_index();
   new_web_contents->GetController().Restore(
       selected_index,
       content::NavigationController::RESTORE_LAST_SESSION_EXITED_CLEANLY,
       &entries);
 
   TabAndroid* current_tab = TabAndroid::FromWebContents(web_contents);
   DCHECK(current_tab);
-  if (disposition == CURRENT_TAB) {
+  if (disposition == WindowOpenDisposition::CURRENT_TAB) {
     current_tab->SwapTabContents(web_contents, new_web_contents, false, false);
     delete web_contents;
   } else {
-    DCHECK(disposition == NEW_FOREGROUND_TAB ||
-        disposition == NEW_BACKGROUND_TAB);
+    DCHECK(disposition == WindowOpenDisposition::NEW_FOREGROUND_TAB ||
+           disposition == WindowOpenDisposition::NEW_BACKGROUND_TAB);
     tab_model->CreateTab(current_tab, new_web_contents,
                          current_tab->GetAndroidId());
   }
   return new_web_contents;
 }
 
 // static
 std::vector<Browser*> SessionRestore::RestoreForeignSessionWindows(
     Profile* profile,
     std::vector<const sessions::SessionWindow*>::const_iterator begin,
     std::vector<const sessions::SessionWindow*>::const_iterator end) {
   NOTREACHED();
   return std::vector<Browser*>();
 }