Remove empty-string comparisons.

webrtc/modules/video_coding/main/test/test_util.cc

 /*
  *  Copyright (c) 2011 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.
  */
 
@@ skipping 55 matching lines @@
 FileOutputFrameReceiver::FileOutputFrameReceiver(
     const std::string& base_out_filename, uint32_t ssrc)
     : out_filename_(),
       out_file_(NULL),
       timing_file_(NULL),
       width_(0),
       height_(0),
       count_(0) {
   std::string basename;
   std::string extension;
-  if (base_out_filename == "") {
+  if (base_out_filename.empty()) {
     basename = webrtc::test::OutputPath() + "rtp_decoded";
     extension = "yuv";
   } else {
     SplitFilename(base_out_filename, &basename, &extension);
   }
   std::stringstream ss;
   ss << basename << "_" << std::hex << std::setw(8) << std::setfill('0') <<
       ssrc << "." << extension;
   out_filename_ = ss.str();
 }
@@ skipping 43 matching lines @@
 }
 
 webrtc::RtpVideoCodecTypes ConvertCodecType(const char* plname) {
   if (strncmp(plname,"VP8" , 3) == 0) {
     return webrtc::kRtpVideoVp8;
   } else {
     // Default value.
     return webrtc::kRtpVideoGeneric;
   }
 }