Make the BackgroundFetchJobController a per-job object

content/browser/background_fetch/background_fetch_data_manager_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_data_manager.h"
 
 #include "base/files/file_path.h"
 #include "content/browser/background_fetch/background_fetch_context.h"
 #include "content/browser/background_fetch/background_fetch_job_info.h"
 #include "content/browser/background_fetch/background_fetch_request_info.h"
@@ skipping 42 matching lines @@
   for (int i = 0; i < 10; i++) {
     BackgroundFetchRequestInfo request_info(GURL(kResource), kTag);
     request_guids.push_back(request_info.guid());
     request_infos.push_back(std::move(request_info));
   }
   BackgroundFetchJobInfo job_info(kTag, url::Origin(GURL(kOrigin)),
                                   kServiceWorkerRegistrationId);
 
   // Initialize a BackgroundFetchJobData with the constructed requests.
   BackgroundFetchDataManager* data_manager = GetDataManager();
-  BackgroundFetchJobData* job_data =
+  std::unique_ptr<BackgroundFetchJobData> job_data =
       data_manager->CreateRequest(job_info, request_infos);
 
   // Get all of the fetch requests from the BackgroundFetchJobData.
   for (int i = 0; i < 10; i++) {
     EXPECT_FALSE(job_data->IsComplete());
     ASSERT_TRUE(job_data->HasRequestsRemaining());
     const BackgroundFetchRequestInfo& request_info =
         job_data->GetNextBackgroundFetchRequestInfo();
     EXPECT_EQ(request_info.tag(), kTag);
   }
 
   // At this point, all the fetches have been started, but none finished.
   EXPECT_FALSE(job_data->HasRequestsRemaining());
   EXPECT_FALSE(job_data->IsComplete());
 
   // Complete all buy one of the fetch requests.
   for (int i = 0; i < 9; i++) {
     EXPECT_FALSE(
         job_data->BackgroundFetchRequestInfoComplete(request_guids[i]));
     EXPECT_FALSE(job_data->IsComplete());
   }
 
   // Complete the final fetch request.
   EXPECT_FALSE(job_data->BackgroundFetchRequestInfoComplete(request_guids[9]));
   EXPECT_TRUE(job_data->IsComplete());
 }
 
 }  // namespace content