Add search results to experimental app list start page.

ui/app_list/views/search_result_list_view.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 "ui/app_list/views/search_result_list_view.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/time/time.h"
 #include "third_party/skia/include/core/SkColor.h"
+#include "ui/app_list/app_list_switches.h"
 #include "ui/app_list/app_list_view_delegate.h"
 #include "ui/app_list/views/search_result_list_view_delegate.h"
 #include "ui/app_list/views/search_result_view.h"
 #include "ui/events/event.h"
 #include "ui/gfx/animation/linear_animation.h"
 #include "ui/views/background.h"
 #include "ui/views/layout/box_layout.h"
 
 namespace {
 
 const int kMaxResults = 6;
+const int kExperimentAppListMaxResults = 3;
 const int kTimeoutIndicatorHeight = 2;
 const int kTimeoutFramerate = 60;
 const SkColor kTimeoutIndicatorColor = SkColorSetRGB(30, 144, 255);
 
 }  // namespace
 
 namespace app_list {
 
 SearchResultListView::SearchResultListView(
     SearchResultListViewDelegate* delegate,
     AppListViewDelegate* view_delegate)
     : delegate_(delegate),
       view_delegate_(view_delegate),
       results_(NULL),
       results_container_(new views::View),
       auto_launch_indicator_(new views::View),
       last_visible_index_(0),
       selected_index_(-1),
       update_factory_(this) {
   results_container_->SetLayoutManager(
       new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0));
 
-  for (int i = 0; i < kMaxResults; ++i)
+  int max_results = kMaxResults;
+  if (app_list::switches::IsExperimentalAppListEnabled())
+    max_results = kExperimentAppListMaxResults;
+
+  for (int i = 0; i < max_results; ++i)
     results_container_->AddChildView(new SearchResultView(this));
   AddChildView(results_container_);
 
   auto_launch_indicator_->set_background(
       views::Background::CreateSolidBackground(kTimeoutIndicatorColor));
   auto_launch_indicator_->SetVisible(false);
 
   AddChildView(auto_launch_indicator_);
 }
 
@@ skipping 220 matching lines @@
   if (delegate_ && view->result())
     delegate_->OnResultInstalled(view->result());
 }
 
 void SearchResultListView::OnSearchResultUninstalled(SearchResultView* view) {
   if (delegate_ && view->result())
     delegate_->OnResultUninstalled(view->result());
 }
 
 }  // namespace app_list