Remove FOR_EACH_OBSERVER macro usage in chrome/browser/extensions

chrome/browser/extensions/tab_helper.cc

 // Copyright (c) 2012 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 "chrome/browser/extensions/tab_helper.h"
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
@@ skipping 506 matching lines @@
   // WebContentsObserver::Send() defaults to using the main RenderView, which
   // might be in a different process if the request came from a frame.
   host->Send(new ExtensionMsg_GetAppInstallStateResponse(return_route_id, state,
                                                          callback_id));
 }
 
 void TabHelper::OnContentScriptsExecuting(
     content::RenderFrameHost* host,
     const ScriptExecutionObserver::ExecutingScriptsMap& executing_scripts_map,
     const GURL& on_url) {
-  FOR_EACH_OBSERVER(
-      ScriptExecutionObserver,
-      script_execution_observers_,
-      OnScriptsExecuted(web_contents(), executing_scripts_map, on_url));
+  for (auto& observer : script_execution_observers_)
+    observer.OnScriptsExecuted(web_contents(), executing_scripts_map, on_url);
 }
 
 const Extension* TabHelper::GetExtension(const ExtensionId& extension_app_id) {
   if (extension_app_id.empty())
     return NULL;
 
   content::BrowserContext* context = web_contents()->GetBrowserContext();
   return ExtensionRegistry::Get(context)->enabled_extensions().GetByID(
       extension_app_id);
 }
@@ skipping 132 matching lines @@
   }
 }
 
 void TabHelper::SetTabId(content::RenderFrameHost* render_frame_host) {
   render_frame_host->Send(
       new ExtensionMsg_SetTabId(render_frame_host->GetRoutingID(),
                                 SessionTabHelper::IdForTab(web_contents())));
 }
 
 }  // namespace extensions