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

chrome/browser/power_save_blocker_win.cc

+// Copyright (c) 2009 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/power_save_blocker.h"
+
+#include <windows.h>
+
+#include "chrome/browser/chrome_thread.h"
+
+// Runs on UI thread only.
+void PowerSaveBlocker::ApplyBlock(bool blocking) {
+  DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
+
+  DWORD flags = ES_CONTINUOUS;
+
+  if (blocking)
+    flags |= ES_SYSTEM_REQUIRED;
+
+  SetThreadExecutionState(flags);
+}