[Payments] Desktop: enable the Payment Request integration by default

chrome/browser/ui/views/payments/payment_request_browsertest_base.h

 // Copyright 2017 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_BROWSERTEST_BASE_H_
 #define CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_BROWSERTEST_BASE_H_
 
 #include <list>
 #include <memory>
 #include <string>
@@ skipping 50 matching lines @@
     : public InProcessBrowserTest,
       public PaymentRequest::ObserverForTest,
       public PaymentRequestDialogView::ObserverForTest,
       public views::WidgetObserver {
  protected:
   // Test will open a browser window to |test_file_path| (relative to
   // chrome/test/data/payments).
   explicit PaymentRequestBrowserTestBase(const std::string& test_file_path);
   ~PaymentRequestBrowserTestBase() override;
 
-  void SetUpCommandLine(base::CommandLine* command_line) override;
   void SetUpOnMainThread() override;
 
   void SetIncognito();
   void SetInvalidSsl();
 
   // PaymentRequest::ObserverForTest:
   void OnCanMakePaymentCalled() override;
   void OnNotSupportedError() override;
 
   // PaymentRequestDialogView::ObserverForTest:
@@ skipping 177 matching lines @@
   TestChromePaymentRequestDelegate* delegate_;
   bool is_incognito_;
   bool is_valid_ssl_;
 
   DISALLOW_COPY_AND_ASSIGN(PaymentRequestBrowserTestBase);
 };
 
 }  // namespace payments
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_BROWSERTEST_BASE_H_