Enable arm64 GPU tests

Enables a subset of GPU Telemetry-based tests on the win-arm64-rel
builder.

As a side-effect, also limits testing to the SFO zone on the builder.
This guarantees that the tests will run on a homogeneous fleet, which
is required for GPU testing and beneficial for testing in general.

Bug: 1502649
Change-Id: Iabbe8942e5e3271540087174daa20d393f0c077b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5033474
Commit-Queue: Brian Sheedy <[email protected]>
Auto-Submit: Brian Sheedy <[email protected]>
Reviewed-by: Yuly Novikov <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1243038}
diff --git a/testing/buildbot/test_suite_exceptions.pyl b/testing/buildbot/test_suite_exceptions.pyl
index b7c3b2bd..81384ed 100644
--- a/testing/buildbot/test_suite_exceptions.pyl
+++ b/testing/buildbot/test_suite_exceptions.pyl
@@ -2323,6 +2323,25 @@
       'Mac FYI Retina ASAN (AMD)',
     ],
   },
+  'context_lost_passthrough_tests': {
+    'modifications': {
+      'win-arm64-rel': {
+        'args': [
+          # These devices have issues running these tests in parallel.
+          '--jobs=1',
+        ],
+      },
+    },
+    'replacements': {
+      'win-arm64-rel': {
+        'args': {
+          # Magic substitution happens after regular replacement, so remove it
+          # now since we are manually applying the number of jobs above.
+          '$$MAGIC_SUBSTITUTION_GPUParallelJobs': None,
+        },
+      },
+    },
+  },
   'context_lost_validating_tests': {
     # TODO(https://crbug.com/850107): Remove the Android FYI Release (Pixel 2)
     # exception once there is enough capacity to run these tests.