Remove download resumption feature flag.

content/browser/download/download_browsertest.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.
 
 // This file contains download browser tests that are known to be runnable
 // in a pure content context.  Over time tests should be migrated here.
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
@@ skipping 530 matching lines @@
 
   bool used_ = false;
   base::RunLoop run_loop_;
   net::HttpRequestHeaders request_headers_;
   TestDownloadRequestHandler::OnStartResponseCallback response_callback_;
 };
 
 class DownloadContentTest : public ContentBrowserTest {
  protected:
   void SetUpOnMainThread() override {
-    // Enable downloads resumption.
-    base::FeatureList::ClearInstanceForTesting();
-    std::unique_ptr<base::FeatureList> feature_list(new base::FeatureList);
-    feature_list->InitializeFromCommandLine(features::kDownloadResumption.name,
-                                            std::string());
-    base::FeatureList::SetInstance(std::move(feature_list));
-
     ASSERT_TRUE(downloads_directory_.CreateUniqueTempDir());
 
     test_delegate_.reset(new TestShellDownloadManagerDelegate());
     test_delegate_->SetDownloadBehaviorForTesting(downloads_directory_.path());
     DownloadManager* manager = DownloadManagerForShell(shell());
     manager->GetDelegate()->Shutdown();
     manager->SetDelegate(test_delegate_.get());
     test_delegate_->SetDownloadManager(manager);
 
     BrowserThread::PostTask(
@@ skipping 1905 matching lines @@
 
   std::vector<DownloadItem*> downloads;
   DownloadManagerForShell(shell())->GetAllDownloads(&downloads);
   ASSERT_EQ(1u, downloads.size());
 
   EXPECT_EQ(FILE_PATH_LITERAL("Jumboshrimp.txt"),
             downloads[0]->GetTargetFilePath().BaseName().value());
 }
 
 }  // namespace content