olly 98fb6d150d Tighten when various SampleSource methods can be called.
This removes the need for each SampleSource implementation to
implement 3x "if(condition) {noop}" tests (ChunkSampleSource
and SingleSampleSource were missing some of these checks).
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=118036233
2016-06-15 19:39:04 +01:00
..
2016-01-22 16:07:16 +00:00