Remove all occurrences of "using std::string".

webrtc/tools/simple_command_line_parser.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include "webrtc/tools/simple_command_line_parser.h"
 
 #include <stdio.h>
 #include <stdlib.h>
 
 #include <string>
 
 namespace webrtc {
 namespace test {
 
-using std::string;
-
 CommandLineParser::CommandLineParser() {}
 CommandLineParser::~CommandLineParser() {}
 
 void CommandLineParser::Init(int argc, char** argv) {
   args_ = std::vector<std::string> (argv + 1, argv + argc);
 }
 
 bool CommandLineParser::IsStandaloneFlag(std::string flag) {
-  return flag.find("=") == string::npos;
+  return flag.find("=") == std::string::npos;
 }
 
 bool CommandLineParser::IsFlagWellFormed(std::string flag) {
   size_t dash_pos = flag.find("--");
   size_t equal_pos = flag.find("=");
   if (dash_pos != 0) {
     fprintf(stderr, "Wrong switch format: %s\n", flag.c_str());
     fprintf(stderr, "Flag doesn't start with --\n");
     return false;
   }
   size_t flag_length = flag.length() - 1;
 
   // We use 3 here because we assume that the flags are in the format
   // --flag_name=flag_value, thus -- are at positions 0 and 1 and we should have
   // at least one symbol for the flag name.
   if (equal_pos > 0 && (equal_pos < 3 || equal_pos == flag_length)) {
     fprintf(stderr, "Wrong switch format: %s\n", flag.c_str());
     fprintf(stderr, "Wrong placement of =\n");
     return false;
   }
   return true;
 }
 
 std::string CommandLineParser::GetCommandLineFlagName(std::string flag) {
   size_t dash_pos = flag.find("--");
   size_t equal_pos = flag.find("=");
-  if (equal_pos == string::npos) {
+  if (equal_pos == std::string::npos) {
     return flag.substr(dash_pos + 2);
   } else {
     return flag.substr(dash_pos + 2, equal_pos - 2);
   }
 }
 
 std::string CommandLineParser::GetCommandLineFlagValue(std::string flag) {
   size_t equal_pos = flag.find("=");
-  if (equal_pos == string::npos) {
+  if (equal_pos == std::string::npos) {
     return "";
   } else {
     return flag.substr(equal_pos + 1);
   }
 }
 
 void CommandLineParser::PrintEnteredFlags() {
   std::map<std::string, std::string>::iterator flag_iter;
   fprintf(stdout, "You have entered:\n");
   for (flag_iter = flags_.begin(); flag_iter != flags_.end(); ++flag_iter) {
@@ skipping 46 matching lines @@
   flag_iter = flags_.find(flag_name);
   // If no such flag.
   if (flag_iter == flags_.end()) {
     return "";
   }
   return flag_iter->second;
 }
 
 }  // namespace test
 }  // namespace webrtc