[Autofill] Add support for signin promo on Android

chrome/browser/android/signin/signin_promo_util_android.cc

+// Copyright 2016 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/android/signin/signin_promo_util_android.h"
+
+#include "base/android/context_utils.h"
+#include "base/android/jni_android.h"
+#include "jni/SigninPromoUtil_jni.h"
+
+namespace chrome {
+namespace android {
+
+// static
+void SigninPromoUtilAndroid::OpenAccountSigninActivityForPromo(
+    signin_metrics::AccessPoint access_point) {
+  Java_SigninPromoUtil_openAccountSigninActivityForPromo(
+      base::android::AttachCurrentThread(),
+      base::android::GetApplicationContext(), jint(access_point));
+}
+
+// static
+bool SigninPromoUtilAndroid::Register(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace android
+}  // namespace chrome