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

remoting/protocol/third_party_authenticator_unittest.cc

Index: remoting/protocol/third_party_authenticator_unittest.cc
diff --git a/remoting/protocol/third_party_authenticator_unittest.cc b/remoting/protocol/third_party_authenticator_unittest.cc
index b787a62c83668dd0c3a2a50c8b2526bd9202f412..029887794dabd805c9d83322637f985b2ced1db8 100644
--- a/remoting/protocol/third_party_authenticator_unittest.cc
+++ b/remoting/protocol/third_party_authenticator_unittest.cc
@@ -153,7 +153,8 @@ TEST_F(ThirdPartyAuthenticatorTest, ClientNoSecret) {
   ASSERT_NO_FATAL_FAILURE(InitAuthenticators());
   ASSERT_NO_FATAL_FAILURE(RunHostInitiatedAuthExchange());
   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, client_->state());
-  ASSERT_NO_FATAL_FAILURE(token_fetcher_->OnTokenFetched(kToken, ""));
+  ASSERT_NO_FATAL_FAILURE(
+      token_fetcher_->OnTokenFetched(kToken, std::string()));
 
   // The end result is that the client rejected the connection, since it
   // couldn't fetch the secret.
@@ -167,7 +168,7 @@ TEST_F(ThirdPartyAuthenticatorTest, InvalidToken) {
   ASSERT_NO_FATAL_FAILURE(token_fetcher_->OnTokenFetched(
       kToken, kSharedSecret));
   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, host_->state());
-  ASSERT_NO_FATAL_FAILURE(token_validator_->OnTokenValidated(""));
+  ASSERT_NO_FATAL_FAILURE(token_validator_->OnTokenValidated(std::string()));
 
   // The end result is that the host rejected the token.
   ASSERT_EQ(Authenticator::REJECTED, host_->state());
@@ -177,7 +178,8 @@ TEST_F(ThirdPartyAuthenticatorTest, CannotFetchToken) {
   ASSERT_NO_FATAL_FAILURE(InitAuthenticators());
   ASSERT_NO_FATAL_FAILURE(RunHostInitiatedAuthExchange());
   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, client_->state());
-  ASSERT_NO_FATAL_FAILURE(token_fetcher_->OnTokenFetched("", ""));
+  ASSERT_NO_FATAL_FAILURE(
+      token_fetcher_->OnTokenFetched(std::string(), std::string()));
 
   // The end result is that the client rejected the connection, since it
   // couldn't fetch the token.