Remove TabContents from AddBlankTabAt, kill AddBlankTab.

chrome/browser/ui/tabs/test_tab_strip_model_delegate.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/ui/tabs/test_tab_strip_model_delegate.h"
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/tabs/dock_info.h"
 #include "ui/gfx/rect.h"
 
 using content::SiteInstance;
 
 TestTabStripModelDelegate::TestTabStripModelDelegate() {
 }
 
 TestTabStripModelDelegate::~TestTabStripModelDelegate() {
 }
 
-TabContents* TestTabStripModelDelegate::AddBlankTab(bool foreground) {
-  return NULL;
-}
-
-TabContents* TestTabStripModelDelegate::AddBlankTabAt(int index,
-                                                      bool foreground) {
-  return NULL;
+void TestTabStripModelDelegate::AddBlankTabAt(int index, bool foreground) {
 }
 
 Browser* TestTabStripModelDelegate::CreateNewStripWithContents(
     const std::vector<NewStripContents>& contentses,
     const gfx::Rect& window_bounds,
     const DockInfo& dock_info,
     bool maximize) {
   return NULL;
 }
 
@@ skipping 35 matching lines @@
 
 void TestTabStripModelDelegate::RestoreTab() {
 }
 
 bool TestTabStripModelDelegate::CanBookmarkAllTabs() const {
   return true;
 }
 
 void TestTabStripModelDelegate::BookmarkAllTabs() {
 }