alternate ntp: toolbar background and separator animation

chrome/browser/ui/search/search_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/search/search_delegate.h"
 
 #include "chrome/browser/ui/search/search_model.h"
 #include "chrome/browser/ui/search/search_tab_helper.h"
 #include "chrome/browser/ui/search/toolbar_search_animator.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 
 namespace chrome {
 namespace search {
 
 SearchDelegate::SearchDelegate(SearchModel* browser_model)
     : browser_model_(browser_model),
       tab_model_(NULL),
       toolbar_search_animator_(browser_model) {
 }
 
 SearchDelegate::~SearchDelegate() {
   DCHECK(!tab_model_) << "All tabs should have been deactivated or closed.";
 }
 
-void SearchDelegate::ModeChanged(const Mode& mode) {
-  browser_model_->SetMode(mode);
+void SearchDelegate::ModeChanged(const Mode& old_mode, const Mode& new_mode) {
+  browser_model_->SetMode(new_mode);
 }
 
 void SearchDelegate::OnTabActivated(TabContents* contents) {
   if (tab_model_)
     tab_model_->RemoveObserver(this);
   tab_model_ = contents->search_tab_helper()->model();
   DCHECK_EQ(tab_model_->tab_contents(), contents);
   browser_model_->set_tab_contents(contents);
   browser_model_->SetMode(tab_model_->mode());
   tab_model_->AddObserver(this);
@@ skipping 12 matching lines @@
   if (contents->search_tab_helper()->model() == tab_model_) {
     tab_model_->RemoveObserver(this);
     browser_model_->set_tab_contents(NULL);
     tab_model_ = NULL;
     toolbar_search_animator_.FinishAnimation(contents);
   }
 }
 
 }  // namespace search
 }  // namespace chrome