[Payment Request] Adds a JourneyLogger instance to the PaymentRequest

ios/chrome/browser/ui/payments/full_card_requester_unittest.mm

 // 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.
 
 #import "ios/chrome/browser/ui/payments/full_card_requester.h"
 
 #include <string>
 
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
@@ skipping 60 matching lines @@
 
  private:
   base::WeakPtrFactory<FakeResultDelegate> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeResultDelegate);
 };
 
 class PaymentRequestFullCardRequesterTest : public ChromeWebTest {
  protected:
   PaymentRequestFullCardRequesterTest()
-      : credit_card_(autofill::test::GetCreditCard()) {
-    TestChromeBrowserState::Builder test_cbs_builder;
-    chrome_browser_state_ = test_cbs_builder.Build();
-  }
+      : credit_card_(autofill::test::GetCreditCard()),
+        chrome_browser_state_(TestChromeBrowserState::Builder().Build()) {}
 
   void SetUp() override {
     ChromeWebTest::SetUp();
 
     // Set up what is needed to have an instance of autofill::AutofillManager.
     AutofillAgent* autofill_agent =
         [[AutofillAgent alloc] initWithBrowserState:chrome_browser_state_.get()
                                            webState:web_state()];
     InfoBarManagerImpl::CreateForWebState(web_state());
     autofill_controller_ = [[AutofillController alloc]
@@ skipping 83 matching lines @@
 
   std::unique_ptr<base::DictionaryValue> response_value =
       payments::data_util::GetBasicCardResponseFromAutofillCreditCard(
           credit_card_, base::ASCIIToUTF16("123"), billing_address, "en-US")
           .ToDictionaryValue();
   std::string stringifiedDetails;
   base::JSONWriter::Write(*response_value, &stringifiedDetails);
 
   full_card_requester.OnInstrumentDetailsReady("visa", stringifiedDetails);
 }