[Extensions] Consolidate ExtensionFunction::SendResponse()s

extensions/browser/api/printer_provider_internal/printer_provider_internal_api.cc

 // Copyright 2015 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/browser/api/printer_provider_internal/printer_provider_internal_api.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 205 matching lines @@
   }
   return RespondLater();
 }
 
 void PrinterProviderInternalGetPrintDataFunction::OnBlob(
     const std::string& type,
     int size,
     const scoped_refptr<base::RefCountedMemory>& data,
     std::unique_ptr<content::BlobHandle> blob) {
   if (!blob) {
-    SetError("Unable to create the blob.");
-    SendResponse(false);
+    Respond(Error("Unable to create the blob."));
     return;
   }
 
   internal_api::BlobInfo info;
   info.blob_uuid = blob->GetUUID();
   info.type = type;
   info.size = size;
 
   std::vector<std::string> uuids;
   uuids.push_back(blob->GetUUID());
 
   extensions::BlobHolder* holder =
       extensions::BlobHolder::FromRenderProcessHost(
           render_frame_host()->GetProcess());
   holder->HoldBlobReference(std::move(blob));
 
-  results_ = internal_api::GetPrintData::Results::Create(info);
   SetTransferredBlobUUIDs(uuids);
-  SendResponse(true);
+  Respond(ArgumentList(internal_api::GetPrintData::Results::Create(info)));
 }
 
 PrinterProviderInternalReportUsbPrinterInfoFunction::
     PrinterProviderInternalReportUsbPrinterInfoFunction() {
 }
 
 PrinterProviderInternalReportUsbPrinterInfoFunction::
     ~PrinterProviderInternalReportUsbPrinterInfoFunction() {
 }
 
 ExtensionFunction::ResponseAction
 PrinterProviderInternalReportUsbPrinterInfoFunction::Run() {
   std::unique_ptr<internal_api::ReportUsbPrinterInfo::Params> params(
       internal_api::ReportUsbPrinterInfo::Params::Create(*args_));
   EXTENSION_FUNCTION_VALIDATE(params.get());
 
   PrinterProviderInternalAPI::GetFactoryInstance()
       ->Get(browser_context())
       ->NotifyGetUsbPrinterInfoResult(extension(), params->request_id,
                                       params->printer_info.get());
   return RespondNow(NoArguments());
 }
 
 }  // namespace extensions