Modify UsbDeviceFilter::MatchesAny to return true for empty filters

device/usb/mojo/device_manager_impl.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 "device/usb/mojo/device_manager_impl.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <utility>
@@ skipping 73 matching lines @@
 void DeviceManagerImpl::OnGetDevices(
     EnumerationOptionsPtr options,
     const GetDevicesCallback& callback,
     const std::vector<scoped_refptr<UsbDevice>>& devices) {
   std::vector<UsbDeviceFilter> filters;
   if (options && options->filters)
     filters = mojo::ConvertTo<std::vector<UsbDeviceFilter>>(*options->filters);
 
   std::vector<DeviceInfoPtr> device_infos;
   for (const auto& device : devices) {
-    if (filters.empty() || UsbDeviceFilter::MatchesAny(device, filters)) {
+    if (UsbDeviceFilter::MatchesAny(device, filters)) {
       if (permission_provider_ &&
           permission_provider_->HasDevicePermission(device)) {
         device_infos.push_back(DeviceInfo::From(*device));
       }
     }
   }
 
   callback.Run(std::move(device_infos));
 }
 
 void DeviceManagerImpl::OnDeviceAdded(scoped_refptr<UsbDevice> device) {
   if (client_ && permission_provider_ &&
       permission_provider_->HasDevicePermission(device))
     client_->OnDeviceAdded(DeviceInfo::From(*device));
 }
 
 void DeviceManagerImpl::OnDeviceRemoved(scoped_refptr<UsbDevice> device) {
   if (client_ && permission_provider_ &&
       permission_provider_->HasDevicePermission(device))
     client_->OnDeviceRemoved(DeviceInfo::From(*device));
 }
 
 void DeviceManagerImpl::WillDestroyUsbService() {
   delete this;
 }
 
 }  // namespace usb
 }  // namespace device