Remove download resumption feature flag.

chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc

Index: chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
diff --git a/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc b/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
index ee4a20bfba7d1bc12a7b097b0f36971a832750f9..cede2fe261628b87aafc6973b236772fad9f72ba 100644
--- a/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
+++ b/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
@@ -316,12 +316,6 @@ class DownloadExtensionTest : public ExtensionApiTest {
 
   // InProcessBrowserTest
   void SetUpOnMainThread() override {
-    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));
-
     ExtensionApiTest::SetUpOnMainThread();
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,