Propagates the search result of start page to the app-list search box.

chrome/browser/ui/app_list/start_page_service.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_START_PAGE_SERVICE_H_
 #define CHROME_BROWSER_UI_APP_LIST_START_PAGE_SERVICE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/observer_list.h"
+#include "base/strings/string16.h"
 #include "components/browser_context_keyed_service/browser_context_keyed_service.h"
 #include "content/public/browser/web_contents.h"
 
 namespace extensions {
 class Extension;
 }
 
 class Profile;
 
 namespace app_list {
 
 class RecommendedApps;
+class StartPageObserver;
 
 // StartPageService collects data to be displayed in app list's start page
 // and hosts the start page contents.
 class StartPageService : public BrowserContextKeyedService {
  public:
   typedef std::vector<scoped_refptr<const extensions::Extension> >
       ExtensionList;
   // Gets the instance for the given profile.
   static StartPageService* Get(Profile* profile);
 
+  void AddObserver(StartPageObserver* observer);
+  void RemoveObserver(StartPageObserver* observer);
+
   content::WebContents* contents() { return contents_.get(); }
   RecommendedApps* recommended_apps() { return recommended_apps_.get(); }
+  void OnSearch(const base::string16& query);
 
  private:
   // A BrowserContextKeyedServiceFactory for this service.
   class Factory;
 
   // ExitObserver to shutdown the service on exiting. WebContents depends
   // on the profile and needs to be closed before the profile and its
   // keyed service shutdown.
   class ExitObserver;
 
   // The WebContentsDelegate implementation for the start page. This allows
   // getUserMedia() request from the web contents.
   class StartPageWebContentsDelegate;
 
   explicit StartPageService(Profile* profile);
   virtual ~StartPageService();
 
   // BrowserContextKeyedService overrides:
   virtual void Shutdown() OVERRIDE;
 
   Profile* profile_;
   scoped_ptr<content::WebContents> contents_;
   scoped_ptr<StartPageWebContentsDelegate> contents_delegate_;
   scoped_ptr<ExitObserver> exit_observer_;
   scoped_ptr<RecommendedApps> recommended_apps_;
+  ObserverList<StartPageObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(StartPageService);
 };
 
 }  // namespace app_list
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_START_PAGE_SERVICE_H_