Rewrite std::string("") to std::string(), Linux edition.

components/autofill/browser/wallet/wallet_client_unittest.cc

Index: components/autofill/browser/wallet/wallet_client_unittest.cc
diff --git a/components/autofill/browser/wallet/wallet_client_unittest.cc b/components/autofill/browser/wallet/wallet_client_unittest.cc
index 27d1a2d815348ffe54721467ded9b086754a7d4a..62298476d048e8f9c2067b0375bdfceabffda4b2 100644
--- a/components/autofill/browser/wallet/wallet_client_unittest.cc
+++ b/components/autofill/browser/wallet/wallet_client_unittest.cc
@@ -810,9 +810,8 @@ TEST_F(WalletClientTest, NetworkFailureOnExpectedVoidResponse) {
   delegate_.ExpectBaselineMetrics(NO_ESCROW_REQUEST, HAS_WALLET_REQUEST);
   delegate_.ExpectWalletErrorMetric(AutofillMetrics::WALLET_NETWORK_ERROR);
 
-  wallet_client_->SendAutocheckoutStatus(autofill::SUCCESS,
-                                         GURL(kMerchantUrl),
-                                         "");
+  wallet_client_->SendAutocheckoutStatus(
+      autofill::SUCCESS, GURL(kMerchantUrl), std::string());
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   ASSERT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_UNAUTHORIZED);
@@ -840,9 +839,8 @@ TEST_F(WalletClientTest, RequestError) {
   delegate_.ExpectBaselineMetrics(NO_ESCROW_REQUEST, HAS_WALLET_REQUEST);
   delegate_.ExpectWalletErrorMetric(AutofillMetrics::WALLET_BAD_REQUEST);
 
-  wallet_client_->SendAutocheckoutStatus(autofill::SUCCESS,
-                                         GURL(kMerchantUrl),
-                                         "");
+  wallet_client_->SendAutocheckoutStatus(
+      autofill::SUCCESS, GURL(kMerchantUrl), std::string());
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   ASSERT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_BAD_REQUEST);