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

crypto/ec_private_key_unittest.cc

 // Copyright (c) 2011 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 "crypto/ec_private_key.h"
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 #if defined(USE_OPENSSL)
 // Once ECPrivateKey is implemented for OpenSSL, remove this #if block.
 // TODO(mattm): When that happens, also add some exported keys from each to test
 // interop between NSS and OpenSSL.
 TEST(ECPrivateKeyUnitTest, OpenSSLStub) {
   scoped_ptr<crypto::ECPrivateKey> keypair1(
       crypto::ECPrivateKey::Create());
   ASSERT_FALSE(keypair1.get());
 }
 #else
 // Generate random private keys. Export, then re-import. We should get
 // back the same exact public key, and the private key should have the same
 // value and elliptic curve params.
 TEST(ECPrivateKeyUnitTest, InitRandomTest) {
-  const std::string password1 = "";
+  const std::string password1;
   const std::string password2 = "test";
 
   scoped_ptr<crypto::ECPrivateKey> keypair1(
       crypto::ECPrivateKey::Create());
   scoped_ptr<crypto::ECPrivateKey> keypair2(
       crypto::ECPrivateKey::Create());
   ASSERT_TRUE(keypair1.get());
   ASSERT_TRUE(keypair2.get());
 
   std::vector<uint8> key1value;
@@ skipping 42 matching lines @@
   std::vector<uint8> pubkey3;
   std::vector<uint8> pubkey4;
   EXPECT_TRUE(keypair3->ExportPublicKey(&pubkey3));
   EXPECT_TRUE(keypair4->ExportPublicKey(&pubkey4));
 
   EXPECT_EQ(pubkey1, pubkey3);
   EXPECT_EQ(pubkey2, pubkey4);
 }
 
 TEST(ECPrivateKeyUnitTest, BadPasswordTest) {
-  const std::string password1 = "";
+  const std::string password1;
   const std::string password2 = "test";
 
   scoped_ptr<crypto::ECPrivateKey> keypair1(
       crypto::ECPrivateKey::Create());
   ASSERT_TRUE(keypair1.get());
 
   std::vector<uint8> privkey1;
   std::vector<uint8> pubkey1;
   ASSERT_TRUE(keypair1->ExportEncryptedPrivateKey(
       password1, 1, &privkey1));
   ASSERT_TRUE(keypair1->ExportPublicKey(&pubkey1));
 
   scoped_ptr<crypto::ECPrivateKey> keypair2(
       crypto::ECPrivateKey::CreateFromEncryptedPrivateKeyInfo(
           password2, privkey1, pubkey1));
   ASSERT_FALSE(keypair2.get());
 }
 #endif  // !defined(USE_OPENSSL)