[Android] Adding tests for jlongArray conversions to vectors
[Android] Adding tests for jlongArray conversions to vectors

I noticed that I didn't have the test for my last checkin and that the
method I based mine on didn't have one (perhaps for the same issue I had
to add my method).

This patch is fixing that.

Original checkin: https://codereview.chromium.org/1314753002/

Review URL: https://codereview.chromium.org/1316243003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#346498}

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