Create Desktop to iOS Promotion skeleton.

chrome/browser/ui/desktop_ios_promotion/desktop_ios_promotion_model.cc

Index: chrome/browser/ui/desktop_ios_promotion/desktop_ios_promotion_model.cc
diff --git a/chrome/browser/ui/desktop_ios_promotion/desktop_ios_promotion_model.cc b/chrome/browser/ui/desktop_ios_promotion/desktop_ios_promotion_model.cc
new file mode 100644
index 0000000000000000000000000000000000000000..347c3e5d7c8f054a039d634784ca7c8a21077646
--- /dev/null
+++ b/chrome/browser/ui/desktop_ios_promotion/desktop_ios_promotion_model.cc
@@ -0,0 +1,19 @@
+// Copyright 2017 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 "chrome/browser/ui/desktop_ios_promotion/desktop_ios_promotion_model.h"
+
+#include "chrome/browser/ui/desktop_ios_promotion/desktop_ios_promotion_util.h"
+
+DesktopIOSPromotionModel::DesktopIOSPromotionModel(
+    desktop_ios_promotion::PromotionEntryPoint entry_point)
+    : entry_point_(entry_point) {}
+
+void DesktopIOSPromotionModel::OnSendSMSClicked() {
+  // TODO(crbug.com/676655): Call the growth api to send sms.
+}
+
+void DesktopIOSPromotionModel::OnNoThanksClicked() {
+  // TODO(crbug.com/676655): Handle logging & update sync.
+}