[Extensions] Convert APIs to use movable types [12]

extensions/browser/api/printer_provider/printer_provider_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/printer_provider_api.h"
 
 #include <stddef.h>
 
 #include <map>
 #include <set>
@@ skipping 649 matching lines @@
 }
 
 void PrinterProviderAPIImpl::OnGetPrintersResult(
     const Extension* extension,
     int request_id,
     const PrinterProviderInternalAPIObserver::PrinterInfoVector& result) {
   base::ListValue printer_list;
 
   // Update some printer description properties to better identify the extension
   // managing the printer.
-  for (size_t i = 0; i < result.size(); ++i) {
-    scoped_ptr<base::DictionaryValue> printer(result[i]->ToValue());
+  for (const api::printer_provider::PrinterInfo& p : result) {
+    scoped_ptr<base::DictionaryValue> printer(p.ToValue());
     UpdatePrinterWithExtensionInfo(printer.get(), extension);
     printer_list.Append(std::move(printer));
   }
 
   pending_get_printers_requests_.CompleteForExtension(extension->id(),
                                                       request_id, printer_list);
 }
 
 void PrinterProviderAPIImpl::OnGetCapabilityResult(
     const Extension* extension,
@@ skipping 81 matching lines @@
   return new PrinterProviderAPIImpl(context);
 }
 
 // static
 std::string PrinterProviderAPI::GetDefaultPrintError() {
   return api::printer_provider_internal::ToString(
       api::printer_provider_internal::PRINT_ERROR_FAILED);
 }
 
 }  // namespace extensions