Add a new GetNegotiatedProtocol method to StreamSocket and implement in all subclasses.

content/browser/renderer_host/p2p/socket_host_test_utils.h

Index: content/browser/renderer_host/p2p/socket_host_test_utils.h
diff --git a/content/browser/renderer_host/p2p/socket_host_test_utils.h b/content/browser/renderer_host/p2p/socket_host_test_utils.h
index cd00637296a8d280c853f9a11c284ec6346f6da5..03822ffb3d72f37b6bafd79109a682a112d531ce 100644
--- a/content/browser/renderer_host/p2p/socket_host_test_utils.h
+++ b/content/browser/renderer_host/p2p/socket_host_test_utils.h
@@ -75,6 +75,7 @@ class FakeSocket : public net::StreamSocket {
   virtual bool UsingTCPFastOpen() const OVERRIDE;
   virtual int64 NumBytesRead() const OVERRIDE;
   virtual base::TimeDelta GetConnectTimeMicros() const OVERRIDE;
+  virtual net::NextProto GetNegotiatedProtocol() const OVERRIDE;
 
  private:
   bool read_pending_;
@@ -219,6 +220,10 @@ base::TimeDelta FakeSocket::GetConnectTimeMicros() const {
   return base::TimeDelta::FromMicroseconds(-1);
 }
 
+net::NextProto FakeSocket::GetNegotiatedProtocol() const {
+  return net::kProtoUnknown;
+}
+
 void CreateRandomPacket(std::vector<char>* packet) {
   size_t size = kStunHeaderSize + rand() % 1000;
   packet->resize(size);