Move SHA1PRNG_SecureRandomImpl tests to libcore

Moved from the external/apache-harmony tree to here.

(cherry picked from commit 3c9191d16348246eca060fe5627a7068d0842f07)

Bug: 6642616
Change-Id: Ic1da2d340f7331809d19e9f559aacdd10b202b82
1 file changed