Add in-profile external_extensions.json file for Chrome OS OEM customization.

chrome/browser/extensions/extension_service.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_EXTENSION_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 132 matching lines @@
   bool IsInstalledApp(const GURL& url);
 
   // Attempts to uninstall an extension from a given ExtensionService. Returns
   // true iff the target extension exists.
   static bool UninstallExtensionHelper(ExtensionService* extensions_service,
                                        const std::string& extension_id);
 
   // Constructor stores pointers to |profile| and |extension_prefs| but
   // ownership remains at caller.
   ExtensionService(Profile* profile,
-                    const CommandLine* command_line,
-                    const FilePath& install_directory,
-                    ExtensionPrefs* extension_prefs,
-                    bool autoupdate_enabled);
+                   const CommandLine* command_line,
+                   const FilePath& install_directory,
+                   ExtensionPrefs* extension_prefs,
+                   bool autoupdate_enabled);
 
   // Gets the list of currently installed extensions.
   virtual const ExtensionList* extensions() const;
   virtual const ExtensionList* disabled_extensions() const;
   virtual const ExtensionList* terminated_extensions() const;
 
   // Gets the set of pending extensions.
   virtual const PendingExtensionMap& pending_extensions() const;
 
   // Registers an extension to be loaded as a component extension.
@@ skipping 449 matching lines @@
   scoped_ptr<ExtensionBrowserEventRouter> browser_event_router_;
 
   // A collection of external extension providers.  Each provider reads
   // a source of external extension information.  Examples include the
   // windows registry and external_extensions.json.
   ProviderCollection external_extension_providers_;
 
   // Set to true by OnExternalExtensionUpdateUrlFound() when an external
   // extension URL is found.  Used in CheckForExternalUpdates() to see
   // if an update check is needed to install pending extensions.
-  bool external_extension_added_;
+  bool external_extension_url_added_;
 
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            UpdatePendingExtensionAlreadyInstalled);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            InstallAppsWithUnlimtedStorage);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            InstallAppsAndCheckStorageProtection);
   DISALLOW_COPY_AND_ASSIGN(ExtensionService);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_