**Task Description:** We are developing a Selenium-based automation tool and need a **JavaScript stealth patch specifically optimized for Microsoft Edge (Chromium)**. The goal is to make the automated browser appear **as close as possible to a normal real user browser** when checked on fingerprinting test sites. **Requirements:** 1. Create a **JavaScript stealth patch** that can be injected using Selenium CDP: ```python driver.execute_cdp_cmd("Page.addScriptToEvaluateOnNewDocument", {"source": JS_PATCH}) ``` 2. The patch should help ensure that on fingerprint testing sites such as: * PixelScan * BrowserScan * similar browser fingerprint check tools the browser appears **natural and not flagged as automated**. 3. The patch should address common automation signals including (but not limited to): * `navigator.webdriver` * automation-related properties * Chrome/Edge runtime environment checks * permissions API inconsistencies * window dimension mismatches * other common JavaScript-based automation detections 4. Important constraints: * **Do not over-spoof fingerprints** (avoid unrealistic plugin arrays, fake GPU values, etc.) * The browser should **retain realistic native values** * The result should **look like a normal Edge browser environment** * Avoid triggering **“Masking detected”** or **automation flags** on fingerprint scanners. 5. The solution should: * Work on **Microsoft Edge (Chromium)** * Be compatible with **Selenium WebDriver** * Be stable across page loads * Be injected before page scripts execute. **Deliverables:** * A clean, production-ready **JavaScript stealth patch** * Instructions on how to inject it via Selenium CDP * Explanation of what each modification does * Any additional recommendations for improving browser realism. The goal is **maximum realism with minimal spoofing** so that the browser environment behaves like a genuine user browser.