Allow chromedriver to install an extension and get all installed extension IDs.

chrome/browser/automation/testing_automation_provider.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_AUTOMATION_TESTING_AUTOMATION_PROVIDER_H_
 #define CHROME_BROWSER_AUTOMATION_TESTING_AUTOMATION_PROVIDER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 614 matching lines @@
   void UnblockAndLaunchBlockedPopup(Browser* browser,
                                     base::DictionaryValue* args,
                                     IPC::Message* reply_message);
 
   // Get info about theme.
   // Uses the JSON interface for input/output.
   void GetThemeInfo(Browser* browser,
                     base::DictionaryValue* args,
                     IPC::Message* reply_message);
 
+  // Install the given unpacked/packed extension.
+  // Uses the JSON interface for input/output.
+  void InstallExtension(base::DictionaryValue* args,
+                        IPC::Message* reply_message);
+
   // Get info about all intalled extensions.
   // Uses the JSON interface for input/output.
-  void GetExtensionsInfo(Browser* browser,
-                         base::DictionaryValue* args,
+  void GetExtensionsInfo(base::DictionaryValue* args,
                          IPC::Message* reply_message);
 
   // Uninstalls the extension with the given id.
   // Uses the JSON interface for input/output.
   void UninstallExtensionById(Browser* browser,
                               base::DictionaryValue* args,
                               IPC::Message* reply_message);
 
   // Set extension states:
   //   Enable/disable extension.
@@ skipping 749 matching lines @@
   // Used to enumerate browser profiles.
   scoped_refptr<ImporterList> importer_list_;
 
   // The stored data for the ImportSettings operation.
   ImportSettingsData import_settings_data_;
 
   DISALLOW_COPY_AND_ASSIGN(TestingAutomationProvider);
 };
 
 #endif  // CHROME_BROWSER_AUTOMATION_TESTING_AUTOMATION_PROVIDER_H_