Remove InProcessBrowserTest::SetUpOnMainThread() calls.

chrome/browser/ui/views/media_router/media_router_ui_browsertest.cc

 // Copyright 2015 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 "base/bind.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/extensions/browser_action_test_util.h"
 #include "chrome/browser/media/router/media_router_ui_service.h"
 #include "chrome/browser/prefs/browser_prefs.h"
@@ skipping 31 matching lines @@
 
 class MediaRouterUIBrowserTest : public InProcessBrowserTest {
  public:
   MediaRouterUIBrowserTest()
       : issue_(IssueInfo("title notification",
                          IssueInfo::Action::DISMISS,
                          IssueInfo::Severity::NOTIFICATION)) {}
   ~MediaRouterUIBrowserTest() override {}
 
   void SetUpOnMainThread() override {
-    InProcessBrowserTest::SetUpOnMainThread();
-
     BrowserActionsContainer* browser_actions_container =
         BrowserView::GetBrowserViewForBrowser(browser())
             ->toolbar()
             ->browser_actions();
     ASSERT_TRUE(browser_actions_container);
     toolbar_actions_bar_ = browser_actions_container->toolbar_actions_bar();
 
     action_controller_ =
         MediaRouterUIService::Get(browser()->profile())->action_controller();
 
@@ skipping 312 matching lines @@
 }
 
 IN_PROC_BROWSER_TEST_F(MediaRouterUIBrowserTest,
                        MigrateToolbarIconUnshownPref) {
   MigrateToolbarIconPref(false);
   EXPECT_FALSE(MediaRouterActionController::GetAlwaysShowActionPref(
       browser()->profile()));
 }
 
 }  // namespace media_router