Increase the timeout of all LUCI Windows GPU FYI bots.

Timeouts are seen accross most of the builders.

TBR=iannucci@chromium.org
NOTRY=true

BUG=820190

Change-Id: Id7122242be4fcfe34893a305c32fa4d05f49a80b
Reviewed-on: https://chromium-review.googlesource.com/966588Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#543711}

infra/config/global/cr-buildbucket.cfg

@@ -296,11 +296,21 @@ builder_mixins {
   }
 }
 
+# GPU bots run very long tests sometimes on a single tester. The regular
+# timeout isn't enough on some testers during the migration when they run both
+# the buildbot and LUCI tests. Double the timeout for them.
+# TODO(cwallez@chromium.org): remove this when the migration is complete
+builder_mixins {
+  name: "gpu-slow-bot"
+  execution_timeout_secs: 21600  # 2 x 3h for a double workload
+}
+
 builder_mixins {
   name: "win-gpu-fyi-ci"
   dimensions: "cpu:x86-64"
   mixins: "win"
   mixins: "gpu-fyi-ci"
+  mixins: "gpu-slow-bot"
 }
 
 builder_mixins {
@@ -313,15 +323,6 @@ builder_mixins {
   }
 }
 
-# GPU bots run very long tests sometimes on a single tester. The regular
-# timeout isn't enough on some testers during the migration when they run both
-# the buildbot and LUCI tests. Double the timeout for them.
-# TODO(cwallez@chromium.org): remove this when the migration is complete
-builder_mixins {
-  name: "gpu-slow-bot"
-  execution_timeout_secs: 21600  # 2 x 3h for a double workload
-}
-
 buckets {
   name: "luci.chromium.ci"
   acl_sets: "ci"
@@ -721,7 +722,6 @@ buckets {
     builders {
       name: "Win10 FYI Debug (NVIDIA)"
       mixins: "win-gpu-fyi-ci"
-      mixins: "gpu-slow-bot"
     }
     builders {
       name: "Win10 FYI dEQP Release (NVIDIA)"