Christian Blichmann fea5e8c485 CMake: Avoid Google Test error when re-configuring with latest Abseil
Abseil insists on having a Google Test directory, even if we're not going to
run (or even build) the tests.

This changes forces all test settings to `OFF` just for Abseil, allowing
SAPI builds to complete normally. Embedding projects should not be affected,
if they already included Abseil.

PiperOrigin-RevId: 309035680
Change-Id: Ie46297d8b502d92d0c10ef04360e992bcee4964b
2020-04-29 09:17:26 -07:00
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