Add a browsertest suite for net predictor

net/test/embedded_test_server/embedded_test_server_unittest.cc

Index: net/test/embedded_test_server/embedded_test_server_unittest.cc
diff --git a/net/test/embedded_test_server/embedded_test_server_unittest.cc b/net/test/embedded_test_server/embedded_test_server_unittest.cc
index be9cb8a34ddf02de549ca4ced256557215cffcea..d3a103199622c351847afbd29bed93dff61d2656 100644
--- a/net/test/embedded_test_server/embedded_test_server_unittest.cc
+++ b/net/test/embedded_test_server/embedded_test_server_unittest.cc
@@ -83,7 +83,7 @@ class TestConnectionListener
 
   // Get called from the EmbeddedTestServer thread to be notified that
   // a connection was read from.
-  void ReadFromSocket(const net::StreamSocket& connection) override {
+  void ReadFromSocket(const net::StreamSocket& connection, int rv) override {
     base::AutoLock lock(lock_);
     did_read_from_socket_ = true;
   }