[Smart Lock, UI] First run expience for Auto sign-in prompt.

chrome/browser/ui/android/snackbars/auto_signin_prompt_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_prompt_controller.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "chrome/browser/android/tab_android.h"
+#include "chrome/browser/password_manager/auto_signin_first_run_infobar_delegate.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/grit/generated_resources.h"
+#include "components/password_manager/core/browser/password_bubble_experiment.h"
+#include "content/public/browser/web_contents.h"
+#include "jni/AutoSigninSnackbarController_jni.h"
+#include "ui/base/l10n/l10n_util.h"
+
+void ShowAutoSigninPrompt(content::WebContents* web_contents,
+                          const base::string16& username) {
+  Profile* profile =
+      Profile::FromBrowserContext(web_contents->GetBrowserContext());
+  base::string16 message = l10n_util::GetStringFUTF16(
+      IDS_MANAGE_PASSWORDS_AUTO_SIGNIN_TITLE, username);
+
+  if (password_bubble_experiment::ShouldShowAutoSignInPromptFirstRunExperience(
+          profile->GetPrefs())) {
+    AutoSigninFirstRunInfoBarDelegate::Create(web_contents, message);
+  } else {
+    JNIEnv* env = base::android::AttachCurrentThread();
+    TabAndroid* tab = TabAndroid::FromWebContents(web_contents);
+    ScopedJavaLocalRef<jstring> java_message =
+        base::android::ConvertUTF16ToJavaString(env, message);
+    Java_AutoSigninSnackbarController_showSnackbar(
+        env, tab->GetJavaObject().obj(), java_message.obj());
+  }
+}
+
+bool RegisterAutoSigninSnackbarController(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}