Pass file name when downloading OMA DRM files

chrome/browser/android/download/download_controller.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/download_controller.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/android/context_utils.h"
@@ skipping 249 matching lines @@
   if (!allowed)
     return;
 
   WebContents* web_contents = wc_getter.Run();
   if (!web_contents) {
     // The view went away. Can't proceed.
     LOG(ERROR) << "Tab closed, download failed on URL:" << info.url.spec();
     return;
   }
 
-  ChromeDownloadDelegate::FromWebContents(web_contents)->
-      EnqueueDownloadManagerRequest(
-          info.url.spec(), info.user_agent,
-          info.content_disposition, info.original_mime_type,
-          info.cookie, info.referer);
+  base::string16 filename =
+      net::GetSuggestedFilename(info.url, info.content_disposition,
+                                std::string(),  // referrer_charset
+                                std::string(),  // suggested_name
+                                info.original_mime_type, default_file_name_);
+  ChromeDownloadDelegate::FromWebContents(web_contents)
+      ->EnqueueDownloadManagerRequest(info.url.spec(), info.user_agent,
+                                      filename, info.original_mime_type,
+                                      info.cookie, info.referer);
 }
 
 bool DownloadController::HasFileAccessPermission(
     ui::WindowAndroid* window_android) {
   ScopedJavaLocalRef<jobject> jwindow_android = window_android->GetJavaObject();
 
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(!jwindow_android.is_null());
 
   JNIEnv* env = base::android::AttachCurrentThread();
@@ skipping 99 matching lines @@
 void DownloadController::StartContextMenuDownload(
     const ContextMenuParams& params, WebContents* web_contents, bool is_link,
     const std::string& extra_headers) {
   int process_id = web_contents->GetRenderProcessHost()->GetID();
   int routing_id = web_contents->GetRenderViewHost()->GetRoutingID();
   AcquireFileAccessPermission(
       web_contents, base::Bind(&CreateContextMenuDownload, process_id,
                                routing_id, params, is_link, extra_headers));
 }