Enables delegating signal strategy for It2Me Host.

remoting/host/it2me/it2me_host_unittest.cc

Index: remoting/host/it2me/it2me_host_unittest.cc
diff --git a/remoting/host/it2me/it2me_host_unittest.cc b/remoting/host/it2me/it2me_host_unittest.cc
index 7fab4d849ddbf7de8156ee9b1f032e112d342f7c..652b211cd6eabf3d6cb65b25ffbff296e9ba08c0 100644
--- a/remoting/host/it2me/it2me_host_unittest.cc
+++ b/remoting/host/it2me/it2me_host_unittest.cc
@@ -22,6 +22,7 @@
 #include "remoting/host/chromoting_host_context.h"
 #include "remoting/host/it2me/it2me_confirmation_dialog.h"
 #include "remoting/host/policy_watcher.h"
+#include "remoting/signaling/fake_signal_strategy.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace remoting {
@@ -106,9 +107,6 @@ class It2MeHostTest : public testing::Test {
 
   scoped_refptr<It2MeHost> it2me_host_;
 
-  std::string directory_bot_jid_;
-  XmppSignalStrategy::XmppServerConfig xmpp_server_config_;
-
   DISALLOW_COPY_AND_ASSIGN(It2MeHostTest);
 };
 
@@ -120,10 +118,12 @@ void It2MeHostTest::SetUp() {
       new AutoThreadTaskRunner(base::ThreadTaskRunnerHandle::Get(),
                                run_loop_->QuitClosure());
   dialog_ = new FakeIt2MeConfirmationDialog();
-  it2me_host_ = new It2MeHost(
-      ChromotingHostContext::Create(auto_thread_task_runner),
-      /*policy_watcher=*/nullptr, base::WrapUnique(dialog_),
-      /*observer=*/nullptr, xmpp_server_config_, directory_bot_jid_);
+  it2me_host_ =
+      new It2MeHost(ChromotingHostContext::Create(auto_thread_task_runner),
+                    /*policy_watcher=*/nullptr, base::WrapUnique(dialog_),
+                    /*observer=*/nullptr,
+                    base::WrapUnique(new FakeSignalStrategy("fake_local_jid")),
+                    "fake_user_name", "fake_bot_jid");
 }
 
 void It2MeHostTest::TearDown() {