test: Replace _TEST_CASE_ with _TEST_SUITE_ in /third_party/blink/renderer/core/html/media.

Googletest is (at last) converging with industry-standard terminology
[1]. We previously called test suites "test cases", which was rather
confusing for folks coming from any other testing framework.

Chrome now has a googltest version that supports _TEST_SUITE_ macros
instead of _TEST_CASE_, so this CL cleans up some of the outdated usage.

[1] https://github.com/google/googletest/blob/master/googletest/docs/primer.md#beware-of-the-nomenclature

This CL was uploaded by git cl split.

[email protected]

Bug: 925652
Change-Id: I09719ac546326b23997571eb399171eb213ae013
Reviewed-on: https://chromium-review.googlesource.com/c/1438279
Reviewed-by: Mounir Lamouri <[email protected]>
Commit-Queue: Victor Costan <[email protected]>
Cr-Commit-Position: refs/heads/master@{#626671}
1 file changed