Cleanup: make ExtensionRequestSender manage its IPC responses directly, rather

chrome/renderer/extensions/extension_helper.cc

Index: chrome/renderer/extensions/extension_helper.cc
diff --git a/chrome/renderer/extensions/extension_helper.cc b/chrome/renderer/extensions/extension_helper.cc
index 24d3dc285680c9fcd71a82259bd0aaa7f92ebebc..52efefd1f29b723c1b1b19714e111c15f7041c85 100644
--- a/chrome/renderer/extensions/extension_helper.cc
+++ b/chrome/renderer/extensions/extension_helper.cc
@@ -202,7 +202,6 @@ bool ExtensionHelper::InstallWebApplicationUsingDefinitionFile(
 bool ExtensionHelper::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ExtensionHelper, message)
-    IPC_MESSAGE_HANDLER(ExtensionMsg_Response, OnExtensionResponse)
     IPC_MESSAGE_HANDLER(ExtensionMsg_MessageInvoke, OnExtensionMessageInvoke)
     IPC_MESSAGE_HANDLER(ExtensionMsg_DispatchOnConnect,
                         OnExtensionDispatchOnConnect)
@@ -280,16 +279,6 @@ void ExtensionHelper::DidCreateDataSource(WebFrame* frame, WebDataSource* ds) {
       frame, extension_dispatcher_);
 }
 
-void ExtensionHelper::OnExtensionResponse(int request_id,
-                                          bool success,
-                                          const base::ListValue& response,
-                                          const std::string& error) {
-  extension_dispatcher_->OnExtensionResponse(request_id,
-                                             success,
-                                             response,
-                                             error);
-}
-
 void ExtensionHelper::OnExtensionMessageInvoke(const std::string& extension_id,
                                                const std::string& function_name,
                                                const base::ListValue& args,