Remove InProcessBrowserTest::SetUpOnMainThread() calls.

chrome/browser/installable/installable_manager_browsertest.cc

 // Copyright 2016 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/installable/installable_manager.h"
 
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 158 matching lines @@
   GURL manifest_url_;
   content::Manifest manifest_;
   GURL primary_icon_url_;
   std::unique_ptr<SkBitmap> primary_icon_;
   bool is_installable_;
 };
 
 class InstallableManagerBrowserTest : public InProcessBrowserTest {
  public:
   void SetUpOnMainThread() override {
-    InProcessBrowserTest::SetUpOnMainThread();
     ASSERT_TRUE(embedded_test_server()->Start());
   }
 
   // Returns a test server URL to a page controlled by a service worker with
   // |manifest_url| injected as the manifest tag.
   std::string GetURLOfPageWithServiceWorkerAndManifest(
       const std::string& manifest_url) {
     return "/banners/manifest_test_page.html?manifest=" +
            embedded_test_server()->GetURL(manifest_url).spec();
   }
@@ skipping 847 matching lines @@
                        CheckNestedCallsToGetData) {
   // Verify that we can call GetData while in a callback from GetData.
   base::RunLoop run_loop;
   InstallableParams params = GetWebAppParams();
   std::unique_ptr<NestedCallbackTester> tester(
       new NestedCallbackTester(GetManager(), params, run_loop.QuitClosure()));
 
   tester->Run();
   run_loop.Run();
 }