[Smart Lock] Auto sign-in snackbar UI.

chrome/browser/ui/android/snackbars/auto_signin_snackbar_controller.cc

+// Copyright 2015 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/android/snackbars/auto_signin_snackbar_controller.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "chrome/browser/android/tab_android.h"
+#include "jni/AutoSigninSnackbarController_jni.h"
+
+AutoSigninSnackbarController::AutoSigninSnackbarController(TabAndroid *tab) {
+  JNIEnv *env = base::android::AttachCurrentThread();
+  java_snackbar_controller_.Reset(Java_AutoSigninSnackbarController_create(
+      env, tab->GetJavaObject().obj(), reinterpret_cast<intptr_t>(this)));
+}
+
+AutoSigninSnackbarController::~AutoSigninSnackbarController() {}
+
+void AutoSigninSnackbarController::onShow(const base::string16 &username) {
+  JNIEnv *env = base::android::AttachCurrentThread();
+  Java_AutoSigninSnackbarController_show(
+      env, java_snackbar_controller_.obj(),
+      base::android::ConvertUTF16ToJavaString(env, username).obj());
+}
+
+void AutoSigninSnackbarController::Destroy(JNIEnv *env, jobject obj) {
+  delete this;
+}
+
+bool RegisterAutoSigninSnackbarController(JNIEnv *env) {
+  return RegisterNativesImpl(env);
+}