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

base/json/json_value_serializer_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 <string>
 
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/json/json_reader.h"
@@ skipping 178 matching lines @@
   ASSERT_EQ(42, int_value);
 
   double double_value = 0.0;
   ASSERT_TRUE(root_dict->GetDouble("double", &double_value));
   ASSERT_DOUBLE_EQ(3.14, double_value);
 
   // We shouldn't be able to write using this serializer, since it was
   // initialized with a const string.
   ASSERT_FALSE(serializer.Serialize(*root_dict));
 
-  std::string test_serialization = "";
+  std::string test_serialization;
   JSONStringValueSerializer mutable_serializer(&test_serialization);
   ASSERT_TRUE(mutable_serializer.Serialize(*root_dict));
   ASSERT_EQ(original_serialization, test_serialization);
 
   mutable_serializer.set_pretty_print(true);
   ASSERT_TRUE(mutable_serializer.Serialize(*root_dict));
   // JSON output uses a different newline style on Windows than on other
   // platforms.
 #if defined(OS_WIN)
 #define JSON_NEWLINE "\r\n"
@@ skipping 254 matching lines @@
   ASSERT_TRUE(file_util::PathExists(source_file_path));
   JSONFileValueSerializer serializer(source_file_path);
   scoped_ptr<Value> root;
   root.reset(serializer.Deserialize(NULL, NULL));
   ASSERT_TRUE(root.get());
 }
 
 }  // namespace
 
 }  // namespace base