[Cast Channel] Add support for nonce challenge to Cast channel authentication.

extensions/browser/api/cast_channel/cast_socket_unittest.cc

 // Copyright 2014 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.
 
 #include "extensions/browser/api/cast_channel/cast_socket.h"
 
 #include <stdint.h>
 
 #include <utility>
 #include <vector>
@@ skipping 42 matching lines @@
 using ::testing::SaveArg;
 
 namespace extensions {
 namespace api {
 namespace cast_channel {
 const char kAuthNamespace[] = "urn:x-cast:com.google.cast.tp.deviceauth";
 
 // Returns an auth challenge message inline.
 CastMessage CreateAuthChallenge() {
   CastMessage output;
-  CreateAuthChallengeMessage(&output);
+  std::unique_ptr<AuthContext> context = base::MakeUnique<AuthContext>("");
+  CreateAuthChallengeMessage(&output, context.get());
   return output;
 }
 
 // Returns an auth challenge response message inline.
 CastMessage CreateAuthReply() {
   CastMessage output;
   output.set_protocol_version(CastMessage::CASTV2_1_0);
   output.set_source_id("sender-0");
   output.set_destination_id("receiver-0");
   output.set_payload_type(CastMessage::BINARY);
@@ skipping 126 matching lines @@
                  Logger* logger,
                  net::TestNetLog* capturing_net_log,
                  uint64_t device_capabilities)
       : CastSocketImpl("some_extension_id",
                        ip_endpoint,
                        channel_auth,
                        capturing_net_log,
                        base::TimeDelta::FromMilliseconds(timeout_ms),
                        false,
                        logger,
-                       device_capabilities),
+                       device_capabilities,
+                       base::MakeUnique<AuthContext>("")),
         capturing_net_log_(capturing_net_log),
         ip_(ip_endpoint),
         extract_cert_result_(true),
         verify_challenge_result_(true),
         verify_challenge_disallow_(false),
         tcp_unresponsive_(false),
         mock_timer_(new base::MockTimer(false, false)),
         mock_transport_(nullptr) {}
 
   ~TestCastSocket() override {}
@@ skipping 556 matching lines @@
                                base::Unretained(&handler_)));
   RunPendingTasks();
 
   EXPECT_EQ(cast_channel::READY_STATE_OPEN, socket_->ready_state());
   EXPECT_EQ(cast_channel::CHANNEL_ERROR_NONE, socket_->error_state());
 }
 
 }  // namespace cast_channel
 }  // namespace api
 }  // namespace extensions