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

net/http/http_auth_gssapi_posix_unittest.cc

 // Copyright (c) 2012 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 "net/http/http_auth_gssapi_posix.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/native_library.h"
@@ skipping 58 matching lines @@
       in_buffer,
       out_buffer);
 }
 
 }  // namespace
 
 TEST(HttpAuthGSSAPIPOSIXTest, GSSAPIStartup) {
   // TODO(ahendrickson): Manipulate the libraries and paths to test each of the
   // libraries we expect, and also whether or not they have the interface
   // functions we want.
-  scoped_ptr<GSSAPILibrary> gssapi(new GSSAPISharedLibrary(""));
+  scoped_ptr<GSSAPILibrary> gssapi(new GSSAPISharedLibrary(std::string()));
   DCHECK(gssapi.get());
   EXPECT_TRUE(gssapi.get()->Init());
 }
 
 #if defined(DLOPEN_KERBEROS)
 TEST(HttpAuthGSSAPIPOSIXTest, GSSAPILoadCustomLibrary) {
   scoped_ptr<GSSAPILibrary> gssapi(
       new GSSAPISharedLibrary("/this/library/does/not/exist"));
   EXPECT_FALSE(gssapi.get()->Init());
 }
@@ skipping 175 matching lines @@
   EXPECT_EQ(OK, auth_gssapi.GenerateAuthToken(NULL, L"HTTP/intranet.google.com",
                                               &auth_token));
   std::string second_challenge_text = "Negotiate =happyjoy=";
   HttpAuth::ChallengeTokenizer second_challenge(second_challenge_text.begin(),
                                                 second_challenge_text.end());
   EXPECT_EQ(HttpAuth::AUTHORIZATION_RESULT_INVALID,
             auth_gssapi.ParseChallenge(&second_challenge));
 }
 
 }  // namespace net