Revert 239280 "Move more file_util functions to base namespace."

trunk/src/content/gpu/gpu_watchdog_thread.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.
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include "content/gpu/gpu_watchdog_thread.h"
 
@@ skipping 39 matching lines @@
                                 GetCurrentThread(),
                                 GetCurrentProcess(),
                                 &watched_thread_handle_,
                                 THREAD_QUERY_INFORMATION,
                                 FALSE,
                                 0);
   DCHECK(result);
 #endif
 
 #if defined(OS_CHROMEOS)
-  tty_file_ = base::OpenFile(base::FilePath(kTtyFilePath), "r");
+  tty_file_ = file_util::OpenFile(base::FilePath(kTtyFilePath), "r");
 #endif
   watched_message_loop_->AddTaskObserver(&task_observer_);
 }
 
 void GpuWatchdogThread::PostAcknowledge() {
   // Called on the monitored thread. Responds with OnAcknowledge. Cannot use
   // the method factory. Rely on reference counting instead.
   message_loop()->PostTask(
       FROM_HERE,
       base::Bind(&GpuWatchdogThread::OnAcknowledge, this));
@@ skipping 243 matching lines @@
   // not increasing. The other is where either the kernel hangs and never
   // returns to user level or where user level code
   // calls into kernel level repeatedly, giving up its quanta before it is
   // tracked, for example a loop that repeatedly Sleeps.
   return base::TimeDelta::FromMilliseconds(static_cast<int64>(
       (user_time64.QuadPart + kernel_time64.QuadPart) / 10000));
 }
 #endif
 
 }  // namespace content