tree 812f3cdc261bdb7bee48c91516b7b36a9f5ea0bb
parent e8852f651aaad842e1e110bb07064cbaa0901230
author Roberto Lublinerman <rluble@google.com> 1499997858 -0700
committer Roberto Lublinerman <rluble@google.com> 1500064483 -0700

Add java.io.Externalizable.

Add java.io.Externalizable so that shared code that implements it can
compile in GWT.

Change-Id: I9a10ac3afcdb4d7080b273fa8b4ea27829e728ba