[Android] Double shard timeouts for ipc_tests on Lollipop Low-end Tester.
[Android] Double shard timeouts for ipc_tests on Lollipop Low-end Tester.

BUG=
TBR=dpranke@chromium.org,tedchoc@chromium.org

Review-Url: https://codereview.chromium.org/1981293004
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#394321}

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