Allow AppSearchProvider to provide recommendations.

chrome/browser/ui/app_list/search/app_search_provider.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_APP_LIST_SEARCH_APP_SEARCH_PROVIDER_H_
 #define CHROME_BROWSER_UI_APP_LIST_SEARCH_APP_SEARCH_PROVIDER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_vector.h"
 #include "base/scoped_observer.h"
 #include "extensions/browser/extension_registry_observer.h"
 #include "ui/app_list/search_provider.h"
 
 class AppListControllerDelegate;
 class Profile;
 
 namespace extensions {
 class ExtensionRegistry;
 class ExtensionSet;
 }
 
 namespace app_list {
 
+namespace test {
+class AppSearchProviderTest;
+}
+
 class AppSearchProvider : public SearchProvider,
                           public extensions::ExtensionRegistryObserver {
  public:
   AppSearchProvider(Profile* profile,
                     AppListControllerDelegate* list_controller);
   virtual ~AppSearchProvider();
 
   // SearchProvider overrides:
   virtual void Start(const base::string16& query) OVERRIDE;
   virtual void Stop() OVERRIDE;
 
  private:
   class App;
   typedef ScopedVector<App> Apps;
 
+  friend test::AppSearchProviderTest;
+
+  void StartImpl(const base::Time& current_time, const base::string16& query);
+
   // Adds extensions to apps container if they should be displayed.
   void AddApps(const extensions::ExtensionSet& extensions);
   void RefreshApps();
 
   // extensions::ExtensionRegistryObserver overrides:
   virtual void OnExtensionLoaded(
       content::BrowserContext* browser_context,
       const extensions::Extension* extension) OVERRIDE;
   virtual void OnExtensionUninstalled(
       content::BrowserContext* browser_context,
       const extensions::Extension* extension,
       extensions::UninstallReason reason) OVERRIDE;
 
   Profile* profile_;
   AppListControllerDelegate* list_controller_;
 
   ScopedObserver<extensions::ExtensionRegistry,
                  extensions::ExtensionRegistryObserver>
       extension_registry_observer_;
 
   Apps apps_;
 
   DISALLOW_COPY_AND_ASSIGN(AppSearchProvider);
 };
 
 }  // namespace app_list
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_SEARCH_APP_SEARCH_PROVIDER_H_