Remove InProcessBrowserTest::SetUpOnMainThread() calls.

chrome/browser/lifetime/browser_close_manager_browsertest.cc

 // Copyright 2013 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/lifetime/browser_close_manager.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 205 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(FakeBackgroundModeManager);
 };
 
 }  // namespace
 
 class BrowserCloseManagerBrowserTest
     : public InProcessBrowserTest,
       public testing::WithParamInterface<bool> {
  protected:
   void SetUpOnMainThread() override {
-    InProcessBrowserTest::SetUpOnMainThread();
     SessionStartupPref::SetStartupPref(
         browser()->profile(), SessionStartupPref(SessionStartupPref::LAST));
     browsers_.push_back(browser());
     content::BrowserThread::PostTask(
         content::BrowserThread::IO, FROM_HERE,
         base::BindOnce(&chrome_browser_net::SetUrlRequestMocksEnabled, true));
   }
 
   void SetUpCommandLine(base::CommandLine* command_line) override {
     if (GetParam())
@@ skipping 1063 matching lines @@
 
   chrome::CloseAllBrowsers();
   EXPECT_FALSE(browser_shutdown::IsTryingToQuit());
   EXPECT_TRUE(BrowserList::GetInstance()->empty());
   EXPECT_TRUE(IsBackgroundModeSuspended());
 }
 
 INSTANTIATE_TEST_CASE_P(BrowserCloseManagerWithBackgroundModeBrowserTest,
                         BrowserCloseManagerWithBackgroundModeBrowserTest,
                         testing::Bool());