Add swarming task for nanobench upload

BUG=skia:5719
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2364693003

Review-Url: https://codereview.chromium.org/2364693003
diff --git a/infra/bots/upload_nano_results.isolate b/infra/bots/upload_nano_results.isolate
new file mode 100644
index 0000000..767fa3a
--- /dev/null
+++ b/infra/bots/upload_nano_results.isolate
@@ -0,0 +1,10 @@
+{
+  'includes': [
+    'swarm_recipe.isolate',
+  ],
+  'variables': {
+    'files': [
+      '../../../.gclient',
+    ],
+  },
+}