Change WebRTC IP handling policy from multiple booleans to an enum.

content/public/common/webrtc_ip_handling_policy.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/public/common/webrtc_ip_handling_policy.h"
+
+namespace content {
+
+// The set of strings here need to match what's specified in privacy.json.
+const char kWebRTCIPHandlingDefault[] = "default";
+const char kWebRTCIPHandlingDefaultPublicAndPrivateInterfaces[] =
+    "default_public_and_private_interfaces";
+const char kWebRTCIPHandlingDefaultPublicInterfaceOnly[] =
+    "default_public_interface_only";
+const char kWebRTCIPHandlingDisableNonProxiedUdp[] = "disable_non_proxied_udp";
+
+}  // namespace content