Test Runner: List tests explicitly without GTest. This dramatically speeds up Android shards that use batches of hudreds of tests. Because ANGLE already has the test list, it no longer needs to call GTest with an enourmous gtest_filter. Bug: angleproject:5164 Change-Id: I28fee2f36c50006f2a35a4dcd90f44f8ebe4f78c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2468464 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org>