tree b641ead6f2852a9ed33a45d7a90f0a86fad621cb
parent 2e70eeb924dcc6e4a2dc1f0ff3b756bede824fa0
author Aaron Holden <aaronholden@google.com> 1487721336 -0800
committer Aaron Holden <aaronholden@google.com> 1488769245 -0800

Retrieve single result without storing all results in memory

Also use new, lightweight IInvocationResult for summarizing
invocation history.

Test: cts-tradefed l r; cts-tradefed run cts -r <session>
bug:35156219
Change-Id: Icba4d352abdb373d82511af89f1eda65524f0225