Reduce FOR_EACH_OBSERVER usage in extensions

extensions/renderer/user_script_set.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/user_script_set.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 138 matching lines @@
         RendererExtensionRegistry::Get()->GetByID(script->extension_id());
     if (whitelisted_only &&
         (!extension ||
          !PermissionsData::CanExecuteScriptEverywhere(extension))) {
       continue;
     }
 
     scripts_.push_back(std::move(script));
   }
 
-  FOR_EACH_OBSERVER(Observer, observers_,
-                    OnUserScriptsUpdated(changed_hosts, scripts_));
+  for (auto& observer : observers_)
+    observer.OnUserScriptsUpdated(changed_hosts, scripts_);
   return true;
 }
 
 std::unique_ptr<ScriptInjection> UserScriptSet::GetDeclarativeScriptInjection(
     int script_id,
     content::RenderFrame* render_frame,
     int tab_id,
     UserScript::RunLocation run_location,
     const GURL& document_url,
     bool log_activity) {
@@ skipping 97 matching lines @@
 
   base::StringPiece script_content = file.GetContent();
   return script_sources_
       .insert(std::make_pair(
           url, blink::WebString::fromUTF8(script_content.data(),
                                           script_content.length())))
       .first->second;
 }
 
 }  // namespace extensions