Remove unneccessary arguments from extensions::DispatcherDelegate

chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc

Index: chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc
diff --git a/chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc b/chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc
index cdb175adb3b15c33f3d903d67f3190bda8178a30..253dd2c13bf985f20e5af937e8a086ddbd069889 100644
--- a/chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc
+++ b/chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc
@@ -262,10 +262,11 @@ void ChromeExtensionsDispatcherDelegate::PopulateSourceMap(
 }
 
 void ChromeExtensionsDispatcherDelegate::RequireAdditionalModules(
-    extensions::ModuleSystem* module_system,
-    const extensions::Extension* extension,
-    extensions::Feature::Context context_type,
+    extensions::ScriptContext* context,
     bool is_within_platform_app) {
+  extensions::ModuleSystem* module_system = context->module_system();
+  extensions::Feature::Context context_type = context->context_type();
+
   // TODO(kalman, fsamuel): Eagerly calling Require on context startup is
   // expensive. It would be better if there were a light way of detecting when
   // a webview or appview is created and only then set up the infrastructure.
@@ -277,6 +278,8 @@ void ChromeExtensionsDispatcherDelegate::RequireAdditionalModules(
     module_system->Require("windowControls");
   }
 
+  const extensions::Extension* extension = context->extension();
+
   // We used to limit WebView to |BLESSED_EXTENSION_CONTEXT| within platform
   // apps. An ext/app runs in a blessed extension context, if it is the active
   // extension in the current process, in other words, if it is loaded in a top