[win] Add a progress bar in the app launcher for app installs.

chrome/browser/ui/app_list/app_list_view_delegate.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_
 #define CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 18 matching lines @@
  public:
   // The delegate will take ownership of the controller.
   AppListViewDelegate(AppListControllerDelegate* controller, Profile* profile);
   virtual ~AppListViewDelegate();
 
   // Called when an extension with the given id starts being installed.
   void OnBeginExtensionInstall(const std::string& extension_id,
                                const std::string& extension_name,
                                const gfx::ImageSkia& installing_icon);
 
+  // Called when the download of an extension makes progress.
+  void OnDownloadProgress(const std::string& extension_id,
+                          int percent_downloaded);
+
  private:
   // Overridden from app_list::AppListViewDelegate:
   virtual void SetModel(app_list::AppListModel* model) OVERRIDE;
   virtual app_list::SigninDelegate* GetSigninDelegate() OVERRIDE;
   virtual void ActivateAppListItem(app_list::AppListItemModel* item,
                                    int event_flags) OVERRIDE;
   virtual void StartSearch() OVERRIDE;
   virtual void StopSearch() OVERRIDE;
   virtual void OpenSearchResult(const app_list::SearchResult& result,
                                 int event_flags) OVERRIDE;
@@ skipping 11 matching lines @@
   Profile* profile_;
 
 #if defined(USE_ASH)
   scoped_ptr<AppSyncUIStateWatcher> app_sync_ui_state_watcher_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(AppListViewDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_