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

content/public/renderer/webrtc_ip_handling_policy.h

+// Copyright (c) 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.
+
+#ifndef CONTENT_PUBLIC_RENDERER_WEBRTC_IP_HANDLING_POLICY_H_
+#define CONTENT_PUBLIC_RENDERER_WEBRTC_IP_HANDLING_POLICY_H_
+
+#include "content/common/content_export.h"
+
+namespace content {
+
+// This is the default behavior of Chrome. Currently, WebRTC has the right to
+// enumerate all interfaces and bind them to discover public interfaces.
+CONTENT_EXPORT extern const char kWebRTCIPHandlingDefault[];
+
+// WebRTC should only use the default route used by http. There will be no host
+// address discovered.

[pthatcher1, 2015/10/23 17:27:29]

There will be no host address discovered => This doesn't expose any local
addresses.

[guoweis_left_chromium, 2015/10/23 18:24:59]

Done.

+CONTENT_EXPORT extern const char kWebRTCIPHandlingDefaultPublicInterfaceOnly[];
+
+// WebRTC should only use TCP protocol to contact peers or servers unless the
+// proxy server supports UDP. This doesn't expose any local address either.

[pthatcher1, 2015/10/23 17:27:29]

local address => local addresses

[pthatcher1, 2015/10/23 17:27:29]

TCP protocol => TCP

[guoweis_left_chromium, 2015/10/23 18:24:59]

Done.

+CONTENT_EXPORT extern const char kWebRTCIPHandlingDisableNonProxiedUdp[];
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_RENDERER_WEBRTC_IP_HANDLING_POLICY_H_