Adds a webstorePrivate method for silently installing extensions.

chrome/browser/extensions/webstore_installer.h

 // Copyright (c) 2011 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_EXTENSIONS_WEBSTORE_INSTALLER_H_
 #define CHROME_BROWSER_EXTENSIONS_WEBSTORE_INSTALLER_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "googleurl/src/gurl.h"
 
+class FilePath;
 class NavigationController;
 class Profile;
 
 // Downloads and installs extensions from the web store.
 class WebstoreInstaller : public content::NotificationObserver,
                           public base::RefCounted<WebstoreInstaller> {
  public:
   enum Flag {
     FLAG_NONE = 0,
 
@@ skipping 25 matching lines @@
 
   // Starts downloading and installing the extension.
   void Start();
 
   // content::NotificationObserver
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
  private:
+  // Starts downloading the extension to |file_path|.
+  void StartDownload(FilePath file_path);
+
   // Reports an install |error| to the delegate for the given extension if this
   // managed its installation. This also removes the associated PendingInstall.
   void ReportFailure(const std::string& error);
 
   // Reports a successful install to the delegate for the given extension if
   // this managed its installation. This also removes the associated
   // PendingInstall.
   void ReportSuccess();
 
   content::NotificationRegistrar registrar_;
   Profile* profile_;
   Delegate* delegate_;
   NavigationController* controller_;
   std::string id_;
   int flags_;
   GURL download_url_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_WEBSTORE_INSTALLER_H_