Add a SearchResultPageView to the experimental app list.

ui/app_list/views/app_list_main_view.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 "ui/app_list/views/app_list_main_view.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 160 matching lines @@
   contents_view_ = NULL;
   if (contents_switcher_view_) {
     delete contents_switcher_view_;
     contents_switcher_view_ = NULL;
   }
   AddContentsViews();
   Layout();
 }
 
 void AppListMainView::UpdateSearchBoxVisibility() {
-  bool visible = !contents_view_->IsStateActive(AppListModel::STATE_START) ||
-                 contents_view_->IsShowingSearchResults();
+  bool visible = !contents_view_->IsStateActive(AppListModel::STATE_START);
   search_box_view_->SetVisible(visible);
   if (visible && GetWidget() && GetWidget()->IsVisible())
     search_box_view_->search_box()->RequestFocus();
 }
 
 void AppListMainView::OnStartPageSearchTextfieldChanged(
     const base::string16& new_contents) {
   search_box_view_->SetVisible(true);
   search_box_view_->search_box()->SetText(new_contents);
   search_box_view_->search_box()->RequestFocus();
@@ skipping 109 matching lines @@
   // Resubmit the query via a posted task so that all observers for the
   // uninstall notification are notified.
   base::MessageLoop::current()->PostTask(
       FROM_HERE,
       base::Bind(&AppListMainView::QueryChanged,
                  weak_ptr_factory_.GetWeakPtr(),
                  search_box_view_));
 }
 
 }  // namespace app_list