DO NOT MERGE 

Invalidating screenshots when we resume the task that they were taken in. (Bug 13587139)

- Removing multiple calls to get the same thumbnail screenshot
(cherry picked from commit d4ce870e9ad24eff444443bd19ca2061f7c3099d)

Change-Id: Id1feea856a1374173c7f0d329d6f11482794df1a
2 files changed