Introduce App Launcher for Windows.

chrome/browser/ui/app_list/apps_model_builder.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/app_list/apps_model_builder.h"
 
 #include "base/i18n/case_conversion.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/app_list/extension_app_item.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/extensions/extension.h"
 #include "content/public/browser/notification_service.h"
 #include "ui/base/l10n/l10n_util_collator.h"
 
 using extensions::Extension;
 
 namespace {
 
+// TODO(benwells): Get the list of special apps from the controller.
 const char* kSpecialApps[] = {
   extension_misc::kChromeAppId,
   extension_misc::kWebStoreAppId,
 };
 
 // ModelItemSortData provides a string key to sort with
 // l10n_util::StringComparator.
 struct ModelItemSortData {
   explicit ModelItemSortData(app_list::AppListItemModel* app)
       : app(app),
@@ skipping 115 matching lines @@
 
   bool is_guest_session = Profile::IsGuestSession();
   ExtensionService* service = profile_->GetExtensionService();
   DCHECK(service);
   for (size_t i = 0; i < arraysize(kSpecialApps); ++i) {
     const std::string extension_id(kSpecialApps[i]);
     if (is_guest_session && extension_id == extension_misc::kWebStoreAppId)
       continue;
 
     const Extension* extension = service->GetInstalledExtension(extension_id);
-    DCHECK(extension);
+    if (!extension)
+      continue;
 
     model_->Add(new ExtensionAppItem(profile_, extension, controller_));
   }
 
   special_apps_count_ = model_->item_count();
 }
 
 int AppsModelBuilder::FindApp(const std::string& app_id) {
   DCHECK(model_);
   for (size_t i = special_apps_count_; i < model_->item_count(); ++i) {
@@ skipping 51 matching lines @@
     }
     case chrome::NOTIFICATION_APP_INSTALLED_TO_APPLIST: {
       highlight_app_id_ = *content::Details<const std::string>(details).ptr();
       HighlightApp();
       break;
     }
     default:
       NOTREACHED();
   }
 }