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

webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.cc

 /*
  *  Copyright (c) 2014 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 <math.h>
 #include <stdio.h>
 #include "webrtc/base/checks.h"
 #include "webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory.h"
 #include "webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.h"
 #include "webrtc/modules/audio_coding/neteq/tools/output_audio_file.h"
 #include "webrtc/modules/audio_coding/neteq/tools/output_wav_file.h"
 #include "webrtc/modules/audio_coding/neteq/tools/resample_input_audio_file.h"
 #include "webrtc/test/testsupport/fileutils.h"
 
-using std::string;
-
 namespace webrtc {
 namespace test {
 
 const uint8_t kPayloadType = 95;
 const int kOutputSizeMs = 10;
 const int kInitSeed = 0x12345678;
 const int kPacketLossTimeUnitMs = 10;
 
 // Common validator for file names.
-static bool ValidateFilename(const string& value, bool write) {
+static bool ValidateFilename(const std::string& value, bool write) {
   FILE* fid = write ? fopen(value.c_str(), "wb") : fopen(value.c_str(), "rb");
   if (fid == nullptr)
     return false;
   fclose(fid);
   return true;
 }
 
 // Define switch for input file name.
-static bool ValidateInFilename(const char* flagname, const string& value) {
+static bool ValidateInFilename(const char* flagname, const std::string& value) {
   if (!ValidateFilename(value, false)) {
     printf("Invalid input filename.");
     return false;
   }
   return true;
 }
 
 DEFINE_string(
     in_filename,
     ResourcePath("audio_coding/speech_mono_16kHz", "pcm"),
@@ skipping 23 matching lines @@
   printf("Invalid number of channels, current support only 1.");
   return false;
 }
 
 DEFINE_int32(channels, 1, "Number of channels in input audio.");
 
 static const bool channels_dummy =
     RegisterFlagValidator(&FLAGS_channels, &ValidateChannels);
 
 // Define switch for output file name.
-static bool ValidateOutFilename(const char* flagname, const string& value) {
+static bool ValidateOutFilename(const char* flagname,
+                                const std::string& value) {
   if (!ValidateFilename(value, true)) {
     printf("Invalid output filename.");
     return false;
   }
   return true;
 }
 
 DEFINE_string(out_filename,
               OutputPath() + "neteq_quality_test_out.pcm",
               "Name of output audio file.");
@@ skipping 336 matching lines @@
     }
   }
   Log() << "Average bit rate was "
         << 8.0f * total_payload_size_bytes_ / FLAGS_runtime_ms
         << " kbps"
         << std::endl;
 }
 
 }  // namespace test
 }  // namespace webrtc