Remove old downloads UI; Material Design version is now the default.

chrome/test/base/web_ui_browser_test_browsertest.cc

 // Copyright 2014 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 <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 14 matching lines @@
 // the statement must be statically available. Therefore, we make a static
 // global s_test_ which should point to |this| for the duration of the test run
 // and be cleared afterward.
 class WebUIBrowserExpectFailTest : public WebUIBrowserTest {
  public:
   WebUIBrowserExpectFailTest() {
     EXPECT_FALSE(s_test_);
     s_test_ = this;
   }
 
-  // Disable new downloads UI as it is very very slow. https://crbug.com/526577
-  // TODO(dbeam): remove this once the downloads UI is not slow.
-  void SetUpCommandLine(base::CommandLine* command_line) override {
-    WebUIBrowserTest::SetUpCommandLine(command_line);
-    command_line->AppendSwitch(switches::kDisableMaterialDesignDownloads);
-  }
-
  protected:
   ~WebUIBrowserExpectFailTest() override {
     EXPECT_TRUE(s_test_);
     s_test_ = NULL;
   }
 
   static void RunJavascriptTestNoReturn(const std::string& testname) {
     EXPECT_TRUE(s_test_);
     s_test_->RunJavascriptTest(testname);
   }
@@ skipping 194 matching lines @@
 // testDone directly and expect pass result.
 IN_PROC_BROWSER_TEST_F(WebUIBrowserAsyncTest, TestTestDoneEarlyPassesAsync) {
   ASSERT_TRUE(RunJavascriptAsyncTest("testDone"));
 }
 
 // Test that calling testDone during RunJavascriptTest still completes when
 // waiting for async result.
 IN_PROC_BROWSER_TEST_F(WebUIBrowserAsyncTest, TestTestDoneEarlyPasses) {
   ASSERT_TRUE(RunJavascriptTest("testDone"));
 }