docs: add experimental chrome on android guide

docs/debugging-android.md

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+# Experimental: Debugging Chrome on Android
+
+This is an experimental feature as Puppeteer does not officially support Chrome on Android as a target.
+
+The workflow below works for most users. See [Troubleshooting: DevTools is not detecting the Android device for more help](https://developer.chrome.com/docs/devtools/remote-debugging#troubleshooting) for more help.
+
+1. Open the Developer Options screen on your Android. See [Configure on-device developer Options](https://developer.android.com/studio/debug/dev-options.html).
+2. Select Enable USB Debugging.
+3. Connect your Android device directly to your development machine using a USB cable.
+4. On your development machine setup port forwarding from your development machine to your android device:
+   ```shell
+   adb forward tcp:9222 localabstract:chrome_devtools_remote
+   ```
+5. Configure your MCP server to connect to the Chrome
+   ```json
+   "chrome-devtools": {
+     "command": "npx",
+     "args": [
+       "chrome-devtools-mcp@latest",
+       "--wsEndpoint=ws://127.0.0.1:9222/devtools/browser/"
+     ],
+     "trust": true
+   }
+   ```
+6. Test your setup by running the following prompt in your coding agent:
+   ```none
+   Check the performance of developers.chrome.com
+   ```
+
+The Chrome DevTools MCP server should now control Chrome on your Android device.