Dev Tools App

Try any devtools version using this Dev Tools App

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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Dev Tools App",
  "description": "Try any devtools version using this Dev Tools App",
  "version": "1.39",
  "app": {
    "background": {
      "page": "background.html"
    }
  },
  "permissions": [
    "webview",
    "http://src.chromium.org/",
    "clipboardWrite"
  ],
  "icons": {
    "16": "devtools16.png",
    "128": "devtools128.png"
  },
  "manifest_version": 2
}