Remove unused test code in ~ResourceContext to handle it being destructed on UI threads.

content/browser/resource_context_impl.cc

 // Copyright (c) 2012 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 "content/browser/resource_context_impl.h"
 
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 36 matching lines @@
                    base::Unretained(rdhi), this));
   }
 }
 
 ResourceContext::~ResourceContext() {
   ResourceDispatcherHostImpl* rdhi = ResourceDispatcherHostImpl::Get();
   if (rdhi) {
     rdhi->CancelRequestsForContext(this);
     rdhi->RemoveResourceContext(this);
   }
-
-  // In some tests this object is destructed on UI thread.
-  DetachUserDataThread();
 }
 
 ResourceContext::SaltCallback ResourceContext::GetMediaDeviceIDSalt() {
   return base::Bind(&ReturnEmptySalt);
 }
 
 std::unique_ptr<net::ClientCertStore> ResourceContext::CreateClientCertStore() {
   return std::unique_ptr<net::ClientCertStore>();
 }
 
@@ skipping 41 matching lines @@
 
   resource_context->SetUserData(
       kStreamContextKeyName,
       new UserDataAdapter<StreamContext>(
           StreamContext::GetFor(browser_context)));
 
   resource_context->DetachUserDataThread();
 }
 
 }  // namespace content