commit 0fab10eb28ab1e246f572302ad0e12508a196b34
author zachh <zachh@google.com> Wed Dec 20 10:57:38 2017 -0800
committer Eric Erfanian <erfanian@google.com> Fri Dec 22 08:53:44 2017 -0800
tree 6fb4d96f0c6e2d9e31ab92fb7a3da5d50384a26d
parent 48609d015f06e262796b7ce8a088243199940a8a

Added copySubMessage method to PhoneLookup interface.

The existing way that protos are merged in CompositePhoneLookup is not correct because foo_submessage from BarDataSource may incorrectly contribute old information to the merged message.

The new copySubMessage method makes it so that each PhoneLookup is responsible for defining which submessage it is responsible for and prevents the problem.

Test: unit
PiperOrigin-RevId: 179707015
Change-Id: I566305cf64c46c698f14812d9241d166ac75a6d3