Convert WindowOpenDisposition to an enum class.

chrome/browser/extensions/api/sessions/sessions_api.cc

 // Copyright 2013 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/extensions/api/sessions/sessions_api.h"
 
 #include <stddef.h>
 
 #include <utility>
 #include <vector>
@@ skipping 454 matching lines @@
       // matches the provided ID and the entry type is Window.
       is_window = is_window_entry(*entry);
       break;
     }
   }
 
   sessions::LiveTabContext* context =
       BrowserLiveTabContext::FindContextForWebContents(
           browser->tab_strip_model()->GetActiveWebContents());
   std::vector<sessions::LiveTab*> restored_tabs =
-      tab_restore_service->RestoreEntryById(context, session_id.id(), UNKNOWN);
+      tab_restore_service->RestoreEntryById(context, session_id.id(),
+                                            WindowOpenDisposition::UNKNOWN);
   // If the ID is invalid, restored_tabs will be empty.
   if (restored_tabs.empty()) {
     SetInvalidIdError(session_id.ToString());
     return false;
   }
 
   sessions::ContentLiveTab* first_tab =
       static_cast<sessions::ContentLiveTab*>(restored_tabs[0]);
 
   // Retrieve the window through any of the tabs in restored_tabs.
@@ skipping 21 matching lines @@
   }
 
   const sessions::SessionTab* tab = NULL;
   if (open_tabs->GetForeignTab(session_id.session_tag(),
                                session_id.id(),
                                &tab)) {
     TabStripModel* tab_strip = browser->tab_strip_model();
     content::WebContents* contents = tab_strip->GetActiveWebContents();
 
     content::WebContents* tab_contents =
-        SessionRestore::RestoreForeignSessionTab(contents, *tab,
-                                                 NEW_FOREGROUND_TAB);
+        SessionRestore::RestoreForeignSessionTab(
+            contents, *tab, WindowOpenDisposition::NEW_FOREGROUND_TAB);
     SetResultRestoredTab(tab_contents);
     return true;
   }
 
   // Restoring a full window.
   std::vector<const sessions::SessionWindow*> windows;
   if (!open_tabs->GetForeignSession(session_id.session_tag(), &windows)) {
     SetInvalidIdError(session_id.ToString());
     return false;
   }
@@ skipping 96 matching lines @@
   return g_factory.Pointer();
 }
 
 void SessionsAPI::OnListenerAdded(const EventListenerInfo& details) {
   sessions_event_router_.reset(
       new SessionsEventRouter(Profile::FromBrowserContext(browser_context_)));
   EventRouter::Get(browser_context_)->UnregisterObserver(this);
 }
 
 }  // namespace extensions