Add Chromium based Edge (Chredge) to the list of webrtc-capable browsers (#1017)

* Add Edge beta (Chredge) to the list of chromium based browsers.

modules/browser/BrowserCapabilities.js

      */
     isChromiumBased() {
         return this.isChrome()
+            || this.isChromiumBasedEdge()
             || this.isElectron()
             || this.isNWJS()
             || this.isOpera();
     }
 
+    /**
+     * Checks if the current browser is Edge that is Chromium based.
+     */
+    isChromiumBasedEdge() {
+        const REQUIRED_EDGE_VERSION = 72;
+
+        return this.isEdge() && this.isVersionGreaterThan(REQUIRED_EDGE_VERSION);
+    }
+
     /**
      * Checks if current browser is a Safari and a version of Safari that
      * supports native webrtc.