Moving It2Me confirmation prompt into the Validation callback flow

remoting/host/it2me/it2me_confirmation_dialog_proxy_unittest.cc

Index: remoting/host/it2me/it2me_confirmation_dialog_proxy_unittest.cc
diff --git a/remoting/host/it2me/it2me_confirmation_dialog_proxy_unittest.cc b/remoting/host/it2me/it2me_confirmation_dialog_proxy_unittest.cc
index 79f78d80058311c75f5cbb82eca84a28a63ef124..9e4ef749b1572c93be9ffada45490fc0efe478a7 100644
--- a/remoting/host/it2me/it2me_confirmation_dialog_proxy_unittest.cc
+++ b/remoting/host/it2me/it2me_confirmation_dialog_proxy_unittest.cc
@@ -20,6 +20,10 @@ using ::testing::CreateFunctor;
 
 namespace remoting {
 
+namespace {
+const char kTestEmailAddress[] = "faux_remote_user@chromium_test.com";
+}  // namespace
+
 class StubIt2MeConfirmationDialog : public It2MeConfirmationDialog {
  public:
   explicit StubIt2MeConfirmationDialog(
@@ -38,9 +42,11 @@ class StubIt2MeConfirmationDialog : public It2MeConfirmationDialog {
   MOCK_METHOD0(OnShow, void());
 
   // It2MeConfirmationDialog implementation.
-  void Show(const ResultCallback& callback) override {
+  void Show(const std::string& remote_user_email,
+            const ResultCallback& callback) override {
     EXPECT_TRUE(callback_.is_null());
     EXPECT_TRUE(task_runner_->BelongsToCurrentThread());
+    EXPECT_EQ(remote_user_email.compare(kTestEmailAddress), 0);
     callback_ = callback;
     OnShow();
   }
@@ -141,7 +147,7 @@ TEST_F(It2MeConfirmationDialogProxyTest, Show) {
       .WillOnce(
           InvokeWithoutArgs(this, &It2MeConfirmationDialogProxyTest::Quit));
 
-  dialog_proxy()->Show(callback_target.MakeCallback());
+  dialog_proxy()->Show(kTestEmailAddress, callback_target.MakeCallback());
 
   Run();
 }