Pass through the response code and headers in Background Fetch

content/browser/background_fetch/background_fetch_job_controller_unittest.cc

 // Copyright 2017 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/background_fetch/background_fetch_job_controller.h"
 
 #include <memory>
 #include <string>
 #include <unordered_map>
 
@@ skipping 56 matching lines @@
                        run_loop.QuitClosure()));
     run_loop.Run();
 
     ASSERT_EQ(error, blink::mojom::BackgroundFetchError::NONE);
     ASSERT_GE(out_initial_requests->size(), 1u);
     ASSERT_LE(out_initial_requests->size(),
               kMaximumBackgroundFetchParallelRequests);
 
     // Provide fake responses for the given |request_data| pairs.
     for (const auto& pair : request_data) {
-      CreateRequestWithProvidedResponse(pair.second, pair.first,
-                                        200 /* status_code */,
-                                        "" /* response_text */);
+      CreateRequestWithProvidedResponse(
+          pair.second, pair.first,
+          TestResponseBuilder(200 /* response_code */).Build());
     }
   }
 
   // Creates a new BackgroundFetchJobController instance.
   std::unique_ptr<BackgroundFetchJobController> CreateJobController(
       const BackgroundFetchRegistrationId& registration_id) {
     StoragePartition* storage_partition =
         BrowserContext::GetDefaultStoragePartition(browser_context());
 
     return base::MakeUnique<BackgroundFetchJobController>(
@@ skipping 144 matching lines @@
 
   // TODO(peter): Verify that the issued download items have had their state
   // updated to be cancelled as well.
 
   EXPECT_EQ(controller->state(), BackgroundFetchJobController::State::ABORTED);
   EXPECT_TRUE(did_complete_job_);
 }
 
 }  // namespace
 }  // namespace content