Don't autgrant any permissions to component extensions.

extensions/common/features/simple_feature.cc

 // Copyright 2014 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.
 
 #include "extensions/common/features/simple_feature.h"
 
 #include <map>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 313 matching lines @@
   Manifest::Type type_to_check = (type == Manifest::TYPE_USER_SCRIPT) ?
       Manifest::TYPE_EXTENSION : type;
   if (!extension_types_.empty() &&
       extension_types_.find(type_to_check) == extension_types_.end()) {
     return CreateAvailability(INVALID_TYPE, type);
   }
 
   if (IsIdInBlacklist(extension_id))
     return CreateAvailability(FOUND_IN_BLACKLIST, type);
 
-  // TODO(benwells): don't grant all component extensions.
-  // See http://crbug.com/370375 for more details.
-  // Component extensions can access any feature.
-  // NOTE: Deliberately does not match EXTERNAL_COMPONENT.
-  if (component_extensions_auto_granted_ && location == Manifest::COMPONENT)
-    return CreateAvailability(IS_AVAILABLE, type);
-
   if (!whitelist_.empty()) {
     if (!IsIdInWhitelist(extension_id)) {
       // TODO(aa): This is gross. There should be a better way to test the
       // whitelist.
       CommandLine* command_line = CommandLine::ForCurrentProcess();
       if (!command_line->HasSwitch(switches::kWhitelistedExtensionID))
         return CreateAvailability(NOT_FOUND_IN_WHITELIST, type);
 
       std::string whitelist_switch_value =
           CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
@@ skipping 214 matching lines @@
     if (!dependency)
       return CreateAvailability(NOT_PRESENT);
     Availability dependency_availability = checker.Run(dependency);
     if (!dependency_availability.is_available())
       return dependency_availability;
   }
   return CreateAvailability(IS_AVAILABLE);
 }
 
 }  // namespace extensions