implementation for new duplicate download UI

chrome/browser/android/download/android_download_manager_duplicate_infobar_delegate.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/download/android_download_manager_duplicate_infobar_delegate.h"
+
+#include <memory>
+
+#include "base/memory/ptr_util.h"
+#include "chrome/browser/android/download/chrome_download_delegate.h"
+#include "chrome/browser/infobars/infobar_service.h"
+#include "chrome/browser/ui/android/infobars/duplicate_download_infobar.h"
+#include "components/infobars/core/infobar.h"
+
+using base::android::ScopedJavaLocalRef;
+
+namespace chrome {
+namespace android {
+
+AndroidDownloadManagerDuplicateInfoBarDelegate::
+    ~AndroidDownloadManagerDuplicateInfoBarDelegate() {
+}
+
+// static
+void AndroidDownloadManagerDuplicateInfoBarDelegate::Create(
+    InfoBarService* infobar_service,
+    const std::string& file_path,
+    jobject chrome_download_delegate,
+    jobject download_info) {
+  infobar_service->AddInfoBar(DuplicateDownloadInfoBar::CreateInfoBar(
+      base::WrapUnique(new AndroidDownloadManagerDuplicateInfoBarDelegate(
+          file_path, chrome_download_delegate, download_info))));
+}
+
+AndroidDownloadManagerDuplicateInfoBarDelegate::
+    AndroidDownloadManagerDuplicateInfoBarDelegate(
+        const std::string& file_path,
+        jobject chrome_download_delegate,
+        jobject download_info)
+    : file_path_(file_path) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  chrome_download_delegate_.Reset(env, chrome_download_delegate);
+  download_info_.Reset(env, download_info);
+}
+
+infobars::InfoBarDelegate::InfoBarIdentifier
+AndroidDownloadManagerDuplicateInfoBarDelegate::GetIdentifier() const {
+  return ANDROID_DOWNLOAD_MANAGER_DUPLICATE_INFOBAR_DELEGATE;
+}
+
+bool AndroidDownloadManagerDuplicateInfoBarDelegate::Download() {
+  bool tab_closed = ChromeDownloadDelegate::EnqueueDownloadManagerRequest(
+      chrome_download_delegate_.obj(), true, download_info_.obj());
+  return !tab_closed;
+}
+
+bool AndroidDownloadManagerDuplicateInfoBarDelegate::Cancel() {
+  return true;
+}
+
+std::string AndroidDownloadManagerDuplicateInfoBarDelegate::GetFilePath()
+    const {
+  return file_path_;
+}
+
+}  // namespace android
+}  // namespace chrome