Avoid basename conflict from memory_pressure_monitor.cc

base/memory/memory_pressure_monitor_chromeos.h

 // Copyright 2014 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.
 
-#ifndef BASE_CHROMEOS_MEMORY_PRESSURE_MONITOR_H_
-#define BASE_CHROMEOS_MEMORY_PRESSURE_MONITOR_H_
+#ifndef BASE_MEMORY_MEMORY_PRESSURE_MONITOR_CHROMEOS_H_
+#define BASE_MEMORY_MEMORY_PRESSURE_MONITOR_CHROMEOS_H_
 
 #include "base/base_export.h"
 #include "base/files/scoped_file.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/memory_pressure_listener.h"
 #include "base/memory/memory_pressure_monitor.h"
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
 
@@ skipping 92 matching lines @@
   ScopedFD low_mem_file_;
 
   base::WeakPtrFactory<MemoryPressureMonitor> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MemoryPressureMonitor);
 };
 
 }  // namespace chromeos
 }  // namespace base
 
-#endif  // BASE_CHROMEOS_MEMORY_PRESSURE_MONITOR_H_
+#endif  // BASE_MEMORY_MEMORY_PRESSURE_MONITOR_CHROMEOS_H_