Move safe_strerror to posix directory and the base namespace

chromecast/base/process_utils.cc

 // Copyright 2015 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 "chromecast/base/process_utils.h"
 
 #include <errno.h>
 #include <stdio.h>
 
 #include "base/logging.h"
-#include "base/safe_strerror_posix.h"
+#include "base/posix/safe_strerror.h"
 #include "base/strings/string_util.h"
 
 namespace chromecast {
 
 bool GetAppOutput(const std::vector<std::string>& argv, std::string* output) {
   DCHECK(output);
 
   // Join the args into one string, creating the command.
   std::string command = JoinString(argv, ' ');
 
   // Open the process.
   FILE* fp = popen(command.c_str(), "r");
   if (!fp) {
-    LOG(ERROR) << "popen (" << command << ") failed: " << safe_strerror(errno);
+    LOG(ERROR) << "popen (" << command << ") failed: "
+               << base::safe_strerror(errno);
     return false;
   }
 
   // Fill |output| with the stdout from the process.
   output->clear();
   while (!feof(fp)) {
     char buffer[256];
     size_t bytes_read = fread(buffer, 1, sizeof(buffer), fp);
     if (bytes_read <= 0)
       break;
     output->append(buffer, bytes_read);
   }
 
   // pclose() function waits for the associated process to terminate and returns
   // the exit status.
   return (pclose(fp) == 0);
 }
 
 }  // namespace chromecast