Switch to standard integer types in sync/.

sync/syncable/write_transaction_info.h

Index: sync/syncable/write_transaction_info.h
diff --git a/sync/syncable/write_transaction_info.h b/sync/syncable/write_transaction_info.h
index 0b571d20359367dfe504d3a2e17333bddfb107e3..dcf2ab414b308238a8da04290502f910485495d7 100644
--- a/sync/syncable/write_transaction_info.h
+++ b/sync/syncable/write_transaction_info.h
@@ -5,6 +5,9 @@
 #ifndef SYNC_SYNCABLE_WRITE_TRANSACTION_INFO_H_
 #define SYNC_SYNCABLE_WRITE_TRANSACTION_INFO_H_
 
+#include <stddef.h>
+#include <stdint.h>
+
 #include <string>
 
 #include "sync/syncable/entry_kernel.h"
@@ -15,7 +18,7 @@ namespace syncable {
 
 // A struct describing the changes made during a transaction.
 struct WriteTransactionInfo {
-  WriteTransactionInfo(int64 id,
+  WriteTransactionInfo(int64_t id,
                        tracked_objects::Location location,
                        WriterTag writer,
                        ImmutableEntryKernelMutationMap mutations);
@@ -25,7 +28,7 @@ struct WriteTransactionInfo {
   // Caller owns the return value.
   base::DictionaryValue* ToValue(size_t max_mutations_size) const;
 
-  int64 id;
+  int64_t id;
   // If tracked_objects::Location becomes assignable, we can use that
   // instead.
   std::string location_string;