Disable system suspend while downloading files on win32....

chrome/browser/download/download_file.cc

 // Copyright (c) 2006-2008 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/download/download_file.h"
 
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/stl_util-inl.h"
 #include "base/string_util.h"
@@ skipping 47 matching lines @@
 DownloadFile::DownloadFile(const DownloadCreateInfo* info)
     : file_(NULL),
       source_url_(info->url),
       referrer_url_(info->referrer_url),
       id_(info->download_id),
       child_id_(info->child_id),
       render_view_id_(info->render_view_id),
       request_id_(info->request_id),
       bytes_so_far_(0),
       path_renamed_(false),
-      in_progress_(true) {
+      in_progress_(true),
+      dont_sleep_(true) {
 }
 
 DownloadFile::~DownloadFile() {
   Close();
 }
 
 bool DownloadFile::Initialize() {
   if (file_util::CreateTemporaryFile(&full_path_))
     return Open("wb");
   return false;
@@ skipping 535 matching lines @@
     ui_loop_->PostTask(FROM_HERE, NewRunnableMethod(
         this, &DownloadFileManager::StopUpdateTimer));
 }
 
 // static
 void DownloadFileManager::DeleteFile(const FilePath& path) {
   // Make sure we only delete files.
   if (!file_util::DirectoryExists(path))
     file_util::Delete(path, false);
 }