[code coverage] Enable clang coverage on Windows CQ.

Bug: 1059102
Change-Id: Ic7773bb238c82dd863676992720c9c0294186b62
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2091946Reviewed-by: Aaron Gable <agable@chromium.org>
Reviewed-by: Yuke Liao <liaoyuke@chromium.org>
Commit-Queue: Sajjad Mirza <sajjadm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#747932}

infra/config/generated/cr-buildbucket.cfg

@@ -18370,6 +18370,7 @@ buckets: <
         name: "chromium_trybot"
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/master"
+        properties_j: "$build/code_coverage:{\"use_clang_coverage\":true}"
         properties_j: "$build/goma:{\"enable_ats\":true,\"jobs\":150,\"rpc_extra_params\":\"?prod\",\"server_host\":\"goma.chromium.org\"}"
         properties_j: "$kitchen:{\"devshell\":true,\"git_auth\":true}"
         properties_j: "mastername:\"tryserver.chromium.win\""

infra/config/versioned/trunk/buckets/try.star

@@ -244,5 +244,6 @@ try_.chromium_win_builder(
     goma_jobs = goma.jobs.J150,
     os = os.WINDOWS_10,
     ssd = True,
+    use_clang_coverage = True,
     tryjob = try_.job(),
 )