Remove extension group from DOMWrapperWorld.

extensions/renderer/dispatcher.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/renderer/dispatcher.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <utility>
@@ skipping 298 matching lines @@
   bool is_active =
       active_extension_ids_.find(extension_id) != active_extension_ids_.end();
   if (is_active)
     CHECK(RendererExtensionRegistry::Get()->Contains(extension_id));
   return is_active;
 }
 
 void Dispatcher::DidCreateScriptContext(
     blink::WebLocalFrame* frame,
     const v8::Local<v8::Context>& v8_context,
-    int extension_group,
     int world_id) {
   const base::TimeTicks start_time = base::TimeTicks::Now();
 
-  ScriptContext* context = script_context_set_->Register(
-      frame, v8_context, extension_group, world_id);
+  ScriptContext* context =
+      script_context_set_->Register(frame, v8_context, world_id);
 
   // Initialize origin permissions for content scripts, which can't be
   // initialized in |OnActivateExtension|.
   if (context->context_type() == Feature::CONTENT_SCRIPT_CONTEXT)
     InitOriginPermissions(context->extension());
 
   {
     std::unique_ptr<ModuleSystem> module_system(
         new ModuleSystem(context, &source_map_));
     context->set_module_system(std::move(module_system));
@@ skipping 1121 matching lines @@
   // The "guestViewDeny" module must always be loaded last. It registers
   // error-providing custom elements for the GuestView types that are not
   // available, and thus all of those types must have been checked and loaded
   // (or not loaded) beforehand.
   if (context_type == Feature::BLESSED_EXTENSION_CONTEXT) {
     module_system->Require("guestViewDeny");
   }
 }
 
 }  // namespace extensions