[third_party] Fix google_benchmark BUILD.gn for newer versions The current BUILD.gn is incompatible with newer versions of google_benchmark. This blocks V8 moving to a newer version of it, see failing roll at: https://chromium-review.googlesource.com/c/v8/v8/+/5281487 Change-Id: I2b9fb23303df75559319e00160fb5af23324aebf Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5285438 Reviewed-by: Peter Kasting <[email protected]> Commit-Queue: Matthias Liedtke <[email protected]> Reviewed-by: Andreas Haas <[email protected]> Cr-Commit-Position: refs/heads/main@{#1260444} NOKEYCHECK=True GitOrigin-RevId: 0f7e367b6588b7c6155eead1bdb2e72ffe3f1c5e