Migrate ChromeOS to base::MemoryPressureMonitor

content/public/browser/memory_pressure_observer.h

Index: content/public/browser/memory_pressure_observer.h
diff --git a/content/public/browser/memory_pressure_observer.h b/content/public/browser/memory_pressure_observer.h
deleted file mode 100644
index 0bfdea487660372498b624821572985da33cac3f..0000000000000000000000000000000000000000
--- a/content/public/browser/memory_pressure_observer.h
+++ /dev/null
@@ -1,25 +0,0 @@
-// 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 CONTENT_PUBLIC_BROWSER_MEMORY_PRESSURE_OBSERVER_H_
-#define CONTENT_PUBLIC_BROWSER_MEMORY_PRESSURE_OBSERVER_H_
-
-#include "content/common/content_export.h"
-
-#if defined(OS_CHROMEOS)
-namespace base {
-class MemoryPressureObserverChromeOS;
-}
-
-namespace content {
-
-// Returns the MemoryPressureObserverChromeOS which gets created and is owned by
-// content.
-CONTENT_EXPORT base::MemoryPressureObserverChromeOS*
-    GetMemoryPressureObserver();
-
-}  // namespace content
-#endif
-
-#endif  // CONTENT_PUBLIC_BROWSER_MEMORY_PRESSURE_OBSERVER_H_