Remove useless code in power_save_blocker_win.cc after changing to Win8 SDK.

content/browser/power_save_blocker_win.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/power_save_blocker.h"
 
 #include <windows.h>
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/scoped_handle.h"
 #include "base/win/windows_version.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace {
 
 int g_blocker_count[2];
 
-#if _WIN32_WINNT <= _WIN32_WINNT_WIN7
-POWER_REQUEST_TYPE PowerRequestExecutionRequired =
-    static_cast<POWER_REQUEST_TYPE>(PowerRequestAwayModeRequired + 1);
-#endif
-
 HANDLE CreatePowerRequest(POWER_REQUEST_TYPE type, const std::string& reason) {
   typedef HANDLE (WINAPI* PowerCreateRequestPtr)(PREASON_CONTEXT);
   typedef BOOL (WINAPI* PowerSetRequestPtr)(HANDLE, POWER_REQUEST_TYPE);
 
   if (type == PowerRequestExecutionRequired &&
       base::win::GetVersion() < base::win::VERSION_WIN8) {
     return INVALID_HANDLE_VALUE;
   }
 
   static PowerCreateRequestPtr PowerCreateRequestFn = NULL;
@@ skipping 137 matching lines @@
       base::Bind(&Delegate::ApplyBlock, delegate_));
 }
 
 PowerSaveBlocker::~PowerSaveBlocker() {
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&Delegate::RemoveBlock, delegate_));
 }
 
 }  // namespace content