Pure pedantry: Replace all ".size() == 0" with ".empty()".

base/process_util_posix.cc

 // Copyright (c) 2010 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 <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <stdlib.h>
 #include <sys/resource.h>
@@ skipping 433 matching lines @@
       const unsigned len = strlen(pair);
       ret[k++] = scratch;
       memcpy(scratch, pair, len + 1);
       scratch += len + 1;
     }
   }
 
   // Now handle new elements
   for (environment_vector::const_iterator
        j = changes.begin(); j != changes.end(); j++) {
-    if (j->second.size() == 0)
+    if (j->second.empty())
       continue;
 
     bool found = false;
     for (unsigned i = 0; env[i]; i++) {
       const char *const pair = env[i];
       const char *const equals = strchr(pair, '=');
       if (!equals)
         continue;
       const unsigned keylen = equals - pair;
       if (keylen == j->first.size() &&
@@ skipping 516 matching lines @@
                       const ProcessFilter* filter) {
   bool exited_cleanly =
       WaitForProcessesToExit(executable_name, wait_milliseconds,
                              filter);
   if (!exited_cleanly)
     KillProcesses(executable_name, exit_code, filter);
   return exited_cleanly;
 }
 
 }  // namespace base