[downloads] Remove DownloadManager::RemoveAllDownloads.

chrome/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.
 
 #include "chrome/browser/download/download_browsertest.h"
 
 #include <stdint.h>
 #include <sstream>
 #include <utility>
 
@@ skipping 419 matching lines @@
 
   void TearDownOnMainThread() override {
     // Needs to be torn down on the main thread. file_activity_observer_ holds a
     // reference to the ChromeDownloadManagerDelegate which should be destroyed
     // on the UI thread.
     file_activity_observer_.reset();
   }
 
   // Returning false indicates a failure of the setup, and should be asserted
   // in the caller.
-  virtual bool InitialSetup() {
+  bool InitialSetup() {
     bool have_test_dir = PathService::Get(chrome::DIR_TEST_DATA, &test_dir_);
     EXPECT_TRUE(have_test_dir);
     if (!have_test_dir)
       return false;
 
     // Sanity check default values for window and tab count.
     int window_count = chrome::GetTotalBrowserCount();
     EXPECT_EQ(1, window_count);
     EXPECT_EQ(1, browser()->tab_strip_model()->count());
 
     // Set up the temporary download folder.
     bool created_downloads_dir = CreateAndSetDownloadsDirectory(browser());
     EXPECT_TRUE(created_downloads_dir);
     if (!created_downloads_dir)
       return false;
     browser()->profile()->GetPrefs()->SetBoolean(
         prefs::kPromptForDownload, false);
 
     DownloadManager* manager = DownloadManagerForBrowser(browser());
     DownloadPrefs::FromDownloadManager(manager)->ResetAutoOpen();
-    manager->RemoveAllDownloads();
 
     file_activity_observer_.reset(
         new DownloadTestFileActivityObserver(browser()->profile()));
 
     return true;
   }
 
  protected:
   enum SizeTestType {
     SIZE_TEST_TYPE_KNOWN,
@@ skipping 3265 matching lines @@
           browser(), 1,
           content::DownloadTestObserver::ON_DANGEROUS_DOWNLOAD_DENY));
   ui_test_utils::NavigateToURL(browser(), extension_url);
 
   observer->WaitForFinished();
 
   // Download shelf should close.
   EXPECT_FALSE(browser()->window()->IsDownloadShelfVisible());
 }
 #endif  // defined(OS_CHROMEOS)