build: move zone.js to angular repo (#30962)

PR Close #30962

packages/zone.js/lib/browser/webapis-rtc-peer-connection.ts

@@ -0,0 +1,26 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+Zone.__load_patch('RTCPeerConnection', (global: any, Zone: ZoneType, api: _ZonePrivate) => {
+  const RTCPeerConnection = global['RTCPeerConnection'];
+  if (!RTCPeerConnection) {
+    return;
+  }
+
+  const addSymbol = api.symbol('addEventListener');
+  const removeSymbol = api.symbol('removeEventListener');
+
+  RTCPeerConnection.prototype.addEventListener = RTCPeerConnection.prototype[addSymbol];
+  RTCPeerConnection.prototype.removeEventListener = RTCPeerConnection.prototype[removeSymbol];
+
+  // RTCPeerConnection extends EventTarget, so we must clear the symbol
+  // to allow patch RTCPeerConnection.prototype.addEventListener again
+  RTCPeerConnection.prototype[addSymbol] = null;
+  RTCPeerConnection.prototype[removeSymbol] = null;
+
+  api.patchEventTarget(global, [RTCPeerConnection.prototype], {useG: false});
+});