Change DTLS default from 1.0 to 1.2 for webrtc.

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 93f6241156e691ece8f2d19d544bb25499c37e05..b9afbad204ce354a7b3294e1fc9409cae615739b 100644
--- a/talk/app/webrtc/peerconnectioninterface.h
+++ b/talk/app/webrtc/peerconnectioninterface.h
@@ -502,13 +502,12 @@ class PeerConnectionFactoryInterface : public rtc::RefCountInterface {
  public:
   class Options {
    public:
-    Options() :
-      disable_encryption(false),
-      disable_sctp_data_channels(false),
-      disable_network_monitor(false),
-      network_ignore_mask(rtc::kDefaultNetworkIgnoreMask),
-      ssl_max_version(rtc::SSL_PROTOCOL_DTLS_10) {
-    }
+    Options()
+        : disable_encryption(false),
+          disable_sctp_data_channels(false),
+          disable_network_monitor(false),
+          network_ignore_mask(rtc::kDefaultNetworkIgnoreMask),
+          ssl_max_version(rtc::SSL_PROTOCOL_DTLS_12) {}
     bool disable_encryption;
     bool disable_sctp_data_channels;
     bool disable_network_monitor;