Switch to standard integer types in components/, part 2 of 4.

components/metrics/serialization/serialization_utils.cc

 // Copyright 2014 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 "components/metrics/serialization/serialization_utils.h"
 
 #include <errno.h>
+#include <stdint.h>
 #include <sys/file.h>
 
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 171 matching lines @@
   fchmod(file_descriptor.get(), READ_WRITE_ALL_FILE_FLAGS);
   // Grab a lock to avoid chrome truncating the file
   // underneath us. Keep the file locked as briefly as possible.
   // Freeing file_descriptor will close the file and and remove the lock.
   if (HANDLE_EINTR(flock(file_descriptor.get(), LOCK_EX)) < 0) {
     DPLOG(ERROR) << "error locking: " << filename;
     return false;
   }
 
   std::string msg = sample.ToString();
-  int32 size = msg.length() + sizeof(int32);
+  int32_t size = msg.length() + sizeof(int32_t);
   if (size > kMessageMaxLength) {
     DPLOG(ERROR) << "cannot write message: too long: " << filename;
     return false;
   }
 
   // The file containing the metrics samples will only be read by programs on
   // the same device so we do not check endianness.
   if (!base::WriteFileDescriptor(file_descriptor.get(),
                                  reinterpret_cast<char*>(&size),
                                  sizeof(size))) {
     DPLOG(ERROR) << "error writing message length: " << filename;
     return false;
   }
 
   if (!base::WriteFileDescriptor(
           file_descriptor.get(), msg.c_str(), msg.size())) {
     DPLOG(ERROR) << "error writing message: " << filename;
     return false;
   }
 
   return true;
 }
 
 }  // namespace metrics