DevTools: implement release note behind an experiment

third_party/WebKit/Source/devtools/front_end/help/module.json

Index: third_party/WebKit/Source/devtools/front_end/help/module.json
diff --git a/third_party/WebKit/Source/devtools/front_end/help/module.json b/third_party/WebKit/Source/devtools/front_end/help/module.json
new file mode 100644
index 0000000000000000000000000000000000000000..6aface30dfefe4c54893dad39a4f5e28889ac4d8
--- /dev/null
+++ b/third_party/WebKit/Source/devtools/front_end/help/module.json
@@ -0,0 +1,25 @@
+{
+  "extensions": [
+    {
+      "type": "context-menu-item",
+      "location": "mainMenu/footer",
+      "actionId": "help.release-notes",
+      "order": 29,
+      "experiment": "releaseNote"
+    },
+    {
+      "type": "@UI.ActionDelegate",
+      "actionId": "help.release-notes",
+      "title": "Release notes",
+      "className": "Help.ReleaseNoteManager.ActionDelegate",
+      "category": "DevTools"
+    }
+  ],
+  "dependencies": [
+    "ui",
+    "sdk"
+  ],
+  "scripts": [
+    "ReleaseNoteManager.js"
+  ]
+}