Return webcontents and add in test.

chrome/browser/sessions/in_memory_tab_restore_service.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/in_memory_tab_restore_service.h"
 
+#include <vector>
+
 #include "base/compiler_specific.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/tab_restore_service_factory.h"
 
 InMemoryTabRestoreService::InMemoryTabRestoreService(
     Profile* profile,
     TabRestoreService::TimeFactory* time_factory)
     : helper_(this, NULL, profile, time_factory) {
 }
 
@@ skipping 26 matching lines @@
 }
 
 void InMemoryTabRestoreService::ClearEntries() {
   helper_.ClearEntries();
 }
 
 const TabRestoreService::Entries& InMemoryTabRestoreService::entries() const {
   return helper_.entries();
 }
 
-void InMemoryTabRestoreService::RestoreMostRecentEntry(
+std::vector<content::WebContents*>
+InMemoryTabRestoreService::RestoreMostRecentEntry(
     TabRestoreServiceDelegate* delegate,
     chrome::HostDesktopType host_desktop_type) {
-  helper_.RestoreMostRecentEntry(delegate, host_desktop_type);
+  return helper_.RestoreMostRecentEntry(delegate, host_desktop_type);
 }
 
 TabRestoreService::Tab* InMemoryTabRestoreService::RemoveTabEntryById(
     SessionID::id_type id) {
   return helper_.RemoveTabEntryById(id);
 }
 
-void InMemoryTabRestoreService::RestoreEntryById(
+std::vector<content::WebContents*> InMemoryTabRestoreService::RestoreEntryById(
     TabRestoreServiceDelegate* delegate,
     SessionID::id_type id,
     chrome::HostDesktopType host_desktop_type,
     WindowOpenDisposition disposition) {
-  helper_.RestoreEntryById(delegate, id, host_desktop_type, disposition);
+  return helper_.RestoreEntryById(delegate, id, host_desktop_type, disposition);
 }
 
 void InMemoryTabRestoreService::LoadTabsFromLastSession() {
   // Do nothing. This relies on tab persistence which is implemented in Java on
   // the application side on Android.
 }
 
 bool InMemoryTabRestoreService::IsLoaded() const {
   // See comment above.
   return true;
 }
 
 void InMemoryTabRestoreService::DeleteLastSession() {
   // See comment above.
 }
 
 void InMemoryTabRestoreService::Shutdown() {
 }
 
 BrowserContextKeyedService* TabRestoreServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* profile) const {
   return new InMemoryTabRestoreService(static_cast<Profile*>(profile), NULL);
 }