implementation for new duplicate download UI

chrome/browser/android/offline_pages/downloads/offline_page_download_bridge.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_OFFLINE_PAGES_DOWNLOADS_OFFLINE_PAGE_DOWNLOAD_BRIDGE_H_
 #define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_DOWNLOADS_OFFLINE_PAGE_DOWNLOAD_BRIDGE_H_
 
 #include <stdint.h>
 
 #include "base/android/jni_android.h"
@@ skipping 43 matching lines @@
       const base::android::JavaParamRef<jstring>& j_guid);
 
   jlong GetOfflineIdByGuid(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& obj,
       const base::android::JavaParamRef<jstring>& j_guid);
 
   void StartDownload(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& obj,
-      const base::android::JavaParamRef<jobject>& j_tab,
-      const base::android::JavaParamRef<jstring>& j_downloads_label);
+      const base::android::JavaParamRef<jobject>& j_tab);
 
   void CancelDownload(JNIEnv* env,
                       const base::android::JavaParamRef<jobject>& obj,
                       const base::android::JavaParamRef<jstring>& j_guid);
 
   void PauseDownload(JNIEnv* env,
                      const base::android::JavaParamRef<jobject>& obj,
                      const base::android::JavaParamRef<jstring>& j_guid);
 
   void ResumeDownload(JNIEnv* env,
@@ skipping 13 matching lines @@
   // Not owned.
   content::BrowserContext* browser_context_;
 
   DISALLOW_COPY_AND_ASSIGN(OfflinePageDownloadBridge);
 };
 
 }  // namespace android
 }  // namespace offline_pages
 
 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_DOWNLOADS_OFFLINE_PAGE_DOWNLOAD_BRIDGE_H_