Remove FOR_EACH_OBSERVER macro usage in chrome/browser/extensions

chrome/browser/extensions/tab_helper.cc

Index: chrome/browser/extensions/tab_helper.cc
diff --git a/chrome/browser/extensions/tab_helper.cc b/chrome/browser/extensions/tab_helper.cc
index 8fdfb7b411a46f105a2629b81a5818a9c1a24895..999fddd39b6d0b656553ce60aa99d8c836696e55 100644
--- a/chrome/browser/extensions/tab_helper.cc
+++ b/chrome/browser/extensions/tab_helper.cc
@@ -524,10 +524,8 @@ 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) {