Remove BrowserThread dependency from usb_service.

device/test/usb_test_gadget_impl.cc

 // Copyright 2014 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/test/usb_test_gadget.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 137 matching lines @@
 
 UsbTestGadgetImpl::UsbTestGadgetImpl() {
   net::URLRequestContextBuilder context_builder;
   context_builder.set_proxy_service(net::ProxyService::CreateDirect());
   request_context_.reset(context_builder.Build());
 
   base::ProcessId process_id = base::Process::Current().pid();
   session_id_ = base::StringPrintf(
       "%s:%p", base::HexEncode(&process_id, sizeof(process_id)).c_str(), this);
 
-  usb_service_ = UsbService::GetInstance();
+  usb_service_ = UsbService::GetInstance(NULL);
 }
 
 UsbTestGadgetImpl::~UsbTestGadgetImpl() {
   if (!device_address_.empty()) {
     Unclaim();
   }
 }
 
 UsbDevice* UsbTestGadgetImpl::GetDevice() const {
   return device_.get();
@@ skipping 357 matching lines @@
     }
     PlatformThread::Sleep(TimeDelta::FromMilliseconds(kRetryPeriod));
   }
   VLOG(1) << "It took " << (kDisconnectRetries - retries)
           << " retries for the device to reconnect.";
 
   return true;
 }
 
 }  // namespace device