Make extensions::DictionaryBuilder and extensions::ListValue unmovable.

chrome/browser/ui/webui/print_preview/extension_printer_handler.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 "chrome/browser/ui/webui/print_preview/extension_printer_handler.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 334 matching lines @@
         extensions::UsbDevicePermission::CheckParam param(
             device->vendor_id(), device->product_id(),
             extensions::UsbDevicePermissionData::UNSPECIFIED_INTERFACE);
         if (device_permissions->FindUsbDeviceEntry(device) ||
             extension->permissions_data()->CheckAPIPermissionWithParam(
                 extensions::APIPermission::kUsbDevice, &param)) {
           // Skip devices the extension already has permission to access.
           continue;
         }
 
-        printer_list.Append(std::move(
+        printer_list.Append(
             DictionaryBuilder()
                 .Set("id", GenerateProvisionalUsbPrinterId(extension.get(),
                                                            device.get()))
                 .Set("name",
                      DevicePermissionsManager::GetPermissionMessage(
                          device->vendor_id(), device->product_id(),
                          device->manufacturer_string(),
                          device->product_string(), base::string16(), false))
                 .Set("extensionId", extension->id())
                 .Set("extensionName", extension->name())
-                .Set("provisional", true)));
+                .Set("provisional", true)
+                .Build());
       }
     }
   }
 
   DCHECK_GT(pending_enumeration_count_, 0);
   pending_enumeration_count_--;
   callback.Run(*printer_list.Build().get(), pending_enumeration_count_ == 0);
 }