Add launcherPage.hide() API.

chrome/browser/ui/app_list/app_list_service_views.cc

 // Copyright 2014 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/app_list/app_list_service_views.h"
 
 #include "chrome/browser/apps/scoped_keep_alive.h"
 #include "chrome/browser/ui/app_list/app_list_controller_delegate.h"
 #include "ui/app_list/app_list_switches.h"
 #include "ui/app_list/views/app_list_main_view.h"
@@ skipping 31 matching lines @@
 
   AppListServiceImpl::ShowForAppInstall(profile, extension_id,
                                         start_discovery_tracking);
 }
 
 void AppListServiceViews::ShowForCustomLauncherPage(Profile* profile) {
   ShowForProfileInternal(profile,
                          app_list::AppListModel::STATE_CUSTOM_LAUNCHER_PAGE);
 }
 
+void AppListServiceViews::HideCustomLauncherPage() {
+  if (!shower_.IsAppListVisible())
+    return;
+
+  app_list::ContentsView* contents_view =
+      shower_.app_list()->app_list_main_view()->contents_view();
+
+  if (contents_view->IsStateActive(
+          app_list::AppListModel::STATE_CUSTOM_LAUNCHER_PAGE)) {
+    contents_view->SetActiveState(app_list::AppListModel::STATE_START, true);
+  }
+}
+
 void AppListServiceViews::DismissAppList() {
   if (!can_dismiss_)
     return;
 
   shower_.DismissAppList();
 }
 
 bool AppListServiceViews::IsAppListVisible() const {
   return shower_.IsAppListVisible();
 }
@@ skipping 43 matching lines @@
   if (state != app_list::AppListModel::INVALID_STATE) {
     app_list::ContentsView* contents_view =
         shower_.app_list()->app_list_main_view()->contents_view();
     contents_view->SetActiveState(state,
                                  shower_.IsAppListVisible() /* animate */);
   }
 
   shower_.ShowForCurrentProfile();
   RecordAppListLaunch();
 }