Update google_benchmark

Rolling v8/third_party/google_benchmark/src: https://chromium.googlesource.com/external/github.com/google/benchmark/+log/8fd49d6..e7fa637

[NFC] PFM: actually report package as found, and advertise description (Roman Lebedev)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/e7fa637

Fix links to further doc in user_guide.md (#1215) (Marcel Jacobse)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/0a447f8

Introduce accessors for currently public data members (threads and thread_index) (#1208) (Vy Nguyen)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/dc1a971

TBR=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com,mlippautz@chromium.org

Change-Id: I2d181784851313c5698151934e21849fd3d0c618
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3115194Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#76446}

DEPS

@@ -232,7 +232,7 @@ deps = {
     'condition': 'checkout_fuchsia',
   },
   'third_party/google_benchmark/src': {
-    'url': Var('chromium_url') + '/external/github.com/google/benchmark.git' + '@' + '8fd49d66719b37156d8e4f7bc2817665ce43664a',
+    'url': Var('chromium_url') + '/external/github.com/google/benchmark.git' + '@' + 'e7fa637cbed5fbad81050014fa166053bbc48c11',
   },
   'third_party/googletest/src':
     Var('chromium_url') + '/external/github.com/google/googletest.git' + '@' + '2f80c2ba71c0e8922a03b9b855e5b019ad1f7064',