Revert of Use associated interface on DownloadedTempFile

content/browser/loader/resource_dispatcher_host_unittest.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 <stddef.h>
 
 #include <memory>
 #include <utility>
 #include <vector>
 
@@ skipping 3413 matching lines @@
       ShareableFileReference::GetOrCreate(
           file_path, ShareableFileReference::DELETE_ON_FINAL_RELEASE,
           BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE).get());
 
   // Not readable.
   EXPECT_FALSE(ChildProcessSecurityPolicyImpl::GetInstance()->CanReadFile(
       filter_->child_id(), file_path));
 
   // Register it for a resource request.
   auto downloaded_file =
-      DownloadedTempFileImpl::CreateForTesting(filter_->child_id(), kRequestID);
+      DownloadedTempFileImpl::Create(filter_->child_id(), kRequestID);
   mojom::DownloadedTempFilePtr downloaded_file_ptr =
-      DownloadedTempFileImpl::CreateForTesting(filter_->child_id(), kRequestID);
+      DownloadedTempFileImpl::Create(filter_->child_id(), kRequestID);
   host_.RegisterDownloadedTempFile(filter_->child_id(), kRequestID, file_path);
 
   // Should be readable now.
   EXPECT_TRUE(ChildProcessSecurityPolicyImpl::GetInstance()->CanReadFile(
       filter_->child_id(), file_path));
 
   // The child releases from the request.
   downloaded_file_ptr = nullptr;
   base::RunLoop().RunUntilIdle();
 
@@ skipping 547 matching lines @@
   return nullptr;
 }
 
 INSTANTIATE_TEST_CASE_P(
     ResourceDispatcherHostTests,
     ResourceDispatcherHostTest,
     testing::Values(TestConfig::kDefault,
                     TestConfig::kOptimizeIPCForSmallResourceEnabled));
 
 }  // namespace content