Make experimental app launcher show 4 rows of apps.

ui/app_list/views/apps_container_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/apps_container_view.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/command_line.h"
 #include "ui/app_list/app_list_constants.h"
 #include "ui/app_list/app_list_folder_item.h"
 #include "ui/app_list/app_list_switches.h"
 #include "ui/app_list/views/app_list_folder_view.h"
 #include "ui/app_list/views/app_list_item_view.h"
 #include "ui/app_list/views/app_list_main_view.h"
 #include "ui/app_list/views/apps_grid_view.h"
 #include "ui/app_list/views/folder_background_view.h"
 #include "ui/events/event.h"
 
 namespace app_list {
 
 AppsContainerView::AppsContainerView(AppListMainView* app_list_main_view,
                                      AppListModel* model)
     : model_(model),
       show_state_(SHOW_NONE),
       top_icon_animation_pending_count_(0) {
   apps_grid_view_ = new AppsGridView(app_list_main_view);
-  int cols = kPreferredCols;
-  int rows = kPreferredRows;
-  // ShouldCenterWindow also implies that it is wide instead of tall.
-  if (app_list_main_view->ShouldCenterWindow()) {
+  int cols;
+  int rows;
+  if (switches::IsExperimentalAppListEnabled()) {
     cols = kExperimentalPreferredCols;
     rows = kExperimentalPreferredRows;
+  } else if (app_list_main_view->ShouldCenterWindow()) {
+    cols = kCenteredPreferredCols;
+    rows = kCenteredPreferredRows;
+  } else {
+    cols = kPreferredCols;
+    rows = kPreferredRows;
   }
   apps_grid_view_->SetLayout(cols, rows);
   AddChildView(apps_grid_view_);
 
   folder_background_view_ = new FolderBackgroundView();
   AddChildView(folder_background_view_);
 
   app_list_folder_view_ =
       new AppListFolderView(this, model, app_list_main_view);
   // The folder view is initially hidden.
@@ skipping 185 matching lines @@
 void AppsContainerView::PrepareToShowApps(AppListFolderItem* folder_item) {
   if (folder_item)
     CreateViewsForFolderTopItemsAnimation(folder_item, false);
 
   // Hide the active folder item until the animation completes.
   if (apps_grid_view_->activated_folder_item_view())
     apps_grid_view_->activated_folder_item_view()->SetVisible(false);
 }
 
 }  // namespace app_list