Bug 4517: Enable connectivity for demo page when no STUN/TURN specifiefd.

talk/app/webrtc/peerconnectioninterface.h

Index: talk/app/webrtc/peerconnectioninterface.h
diff --git a/talk/app/webrtc/peerconnectioninterface.h b/talk/app/webrtc/peerconnectioninterface.h
index ce32b50291a7a46c061bf36aabe9d7cf8d9096b2..885e57e5081fc7660f1c8f6a596cc73dcf8f0ad3 100644
--- a/talk/app/webrtc/peerconnectioninterface.h
+++ b/talk/app/webrtc/peerconnectioninterface.h
@@ -221,6 +221,9 @@ class PeerConnectionInterface : public rtc::RefCountInterface {
     // TODO(pthatcher): Rename this ice_servers, but update Chromium
     // at the same time.
     IceServers servers;
+    // If |enable_localhost_ice_candidate| is true, localhost will be issued as
+    // candidate in the case when multiple_routes is disabled.

[pthatcher1, 2015/08/07 21:59:49]

Would it be easier to reason about the rule "a localhost candidate is signaled
whenever a candidate with the any address is allocated"?

[guoweis_webrtc, 2015/08/13 15:08:52]

Done.

+    bool enable_localhost_ice_candidate;
     BundlePolicy bundle_policy;
     RtcpMuxPolicy rtcp_mux_policy;
     TcpCandidatePolicy tcp_candidate_policy;
@@ -229,6 +232,7 @@ class PeerConnectionInterface : public rtc::RefCountInterface {
 
     RTCConfiguration()
         : type(kAll),
+          enable_localhost_ice_candidate(false),
           bundle_policy(kBundlePolicyBalanced),
           rtcp_mux_policy(kRtcpMuxPolicyNegotiate),
           tcp_candidate_policy(kTcpCandidatePolicyEnabled),