Cleanup: change PIDs to base::ProcessId (or pid_t)

base/process_util_posix.cc

 // Copyright (c) 2006-2008 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 59 matching lines @@
     return false;
   }
 
   bool result = kill(process_id, SIGTERM) == 0;
 
   if (result && wait) {
     int tries = 60;
     // The process may not end immediately due to pending I/O
     bool exited = false;
     while (tries-- > 0) {
-      int pid = HANDLE_EINTR(waitpid(process_id, NULL, WNOHANG));
+      pid_t pid = HANDLE_EINTR(waitpid(process_id, NULL, WNOHANG));
       if (pid == process_id) {
         exited = true;
         break;
       }
 
       sleep(1);
     }
 
     if (!exited) {
       result = kill(process_id, SIGKILL) == 0;
@@ skipping 232 matching lines @@
   // On POSIX, there nothing to do AFAIK.
 }
 
 void RaiseProcessToHighPriority() {
   // On POSIX, we don't actually do anything here.  We could try to nice() or
   // setpriority() or sched_getscheduler, but these all require extra rights.
 }
 
 bool DidProcessCrash(bool* child_exited, ProcessHandle handle) {
   int status;
-  const int result = HANDLE_EINTR(waitpid(handle, &status, WNOHANG));
+  const pid_t result = HANDLE_EINTR(waitpid(handle, &status, WNOHANG));
   if (result == -1) {
     PLOG(ERROR) << "waitpid(" << handle << ")";
     if (child_exited)
       *child_exited = false;
     return false;
   } else if (result == 0) {
     // the child hasn't exited yet.
     if (child_exited)
       *child_exited = false;
     return false;
@@ skipping 294 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