[Downloads] Always call DM::StartDownload() for explicit downloads.

content/browser/download/download_file_impl.cc

 // Copyright (c) 2012 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 "content/browser/download/download_file_impl.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/file_util.h"
@@ skipping 11 matching lines @@
 #include "net/base/io_buffer.h"
 
 namespace content {
 
 const int kUpdatePeriodMs = 500;
 const int kMaxTimeBlockingFileThreadMs = 1000;
 
 int DownloadFile::number_active_objects_ = 0;
 
 DownloadFileImpl::DownloadFileImpl(
-    scoped_ptr<DownloadSaveInfo> save_info,
+    const DownloadSaveInfo& save_info,
     const base::FilePath& default_download_directory,
     const GURL& url,
     const GURL& referrer_url,
     bool calculate_hash,
-    scoped_ptr<ByteStreamReader> stream,
+    scoped_ptr<net::FileStream> file_stream,
+    scoped_ptr<ByteStreamReader> byte_stream,
     const net::BoundNetLog& bound_net_log,
     scoped_ptr<PowerSaveBlocker> power_save_blocker,
     base::WeakPtr<DownloadDestinationObserver> observer)
-        : file_(save_info->file_path,
+        : file_(save_info.file_path,
                 url,
                 referrer_url,
-                save_info->offset,
+                save_info.offset,
                 calculate_hash,
-                save_info->hash_state,
-                save_info->file_stream.Pass(),
+                save_info.hash_state,
+                file_stream.Pass(),
                 bound_net_log),
           default_download_directory_(default_download_directory),
-          stream_reader_(stream.Pass()),
+          stream_reader_(byte_stream.Pass()),
           bytes_seen_(0),
           bound_net_log_(bound_net_log),
           observer_(observer),
           weak_factory_(this),
           power_save_blocker_(power_save_blocker.Pass()) {
 }
 
 DownloadFileImpl::~DownloadFileImpl() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   --number_active_objects_;
@@ skipping 251 matching lines @@
                  observer_, file_.bytes_so_far(), CurrentSpeed(),
                  GetHashState()));
 }
 
 // static
 int DownloadFile::GetNumberOfDownloadFiles() {
   return number_active_objects_;
 }
 
 }  // namespace content