Don't autgrant any permissions to component extensions.

extensions/common/features/simple_feature.cc

Index: extensions/common/features/simple_feature.cc
diff --git a/extensions/common/features/simple_feature.cc b/extensions/common/features/simple_feature.cc
index bdf8fae78879a75cc0d3ed04dcd602a0dea15858..0f22068fc0984c315e5c265cb0cb0daf35cbb5b9 100644
--- a/extensions/common/features/simple_feature.cc
+++ b/extensions/common/features/simple_feature.cc
@@ -331,13 +331,6 @@ Feature::Availability SimpleFeature::IsAvailableToManifest(
   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