Archiving of AppRTC APK in client.webrtc waterfall

scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_android64_builder__dbg_.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
       "[BUILDER_CACHE]/Android64_Builder__dbg_",
       "511"
     ],
     "name": "makedirs checkout path",
@@ skipping 234 matching lines @@
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json",
       "PATH": "[BUILDER_CACHE]/Android64_Builder__dbg_/src/third_party/android_tools/sdk/platform-tools:[BUILDER_CACHE]/Android64_Builder__dbg_/src/build/android:%(PATH)s"
     },
     "name": "compile",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output (invalid)@null@@@",
       "@@@STEP_LOG_END@json.output (invalid)@@@"
     ]
   },
   {
+    "cmd": [
+      "python",
+      "-u",
+      "RECIPE_MODULE[build::zip]/resources/zip.py"
+    ],
+    "name": "AppRTCDemo zip archive",
+    "stdin": "{\"entries\": [{\"archive_name\": null, \"path\": \"[BUILDER_CACHE]/Android64_Builder__dbg_/src/out/Debug/apks/AppRTCDemo.apk\", \"type\": \"file\"}], \"output\": \"[SLAVE_BUILD]/AppRTCDemo_apk.zip\", \"root\": \"[BUILDER_CACHE]/Android64_Builder__dbg_/src/out/Debug/apks\"}"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
+      "--",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
+      "----",
+      "cp",
+      "-a",
+      "public-read",
+      "[SLAVE_BUILD]/AppRTCDemo_apk.zip",
+      "gs://chromium-webrtc/Android64_Builder_(dbg)/AppRTCDemo_apk_170242.zip"
+    ],
+    "name": "gsutil upload",
+    "~followup_annotations": [
+      "@@@STEP_LINK@gsutil.upload@https://storage.googleapis.com/chromium-webrtc/Android64_Builder_(dbg)/AppRTCDemo_apk_170242.zip@@@"
+    ]
+  },
+  {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]