Adding Baseframework of the ResourceManager (all hooks and observers) are being put in place with a…

athena/resource_manager/public/resource_manager.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 ATHENA_RESOURCE_MANAGER_PUBLIC_RESOURCE_MANAGER_H_
+#define ATHENA_RESOURCE_MANAGER_PUBLIC_RESOURCE_MANAGER_H_
+
+#include "athena/resource_manager/memory_pressure_notifier.h"
+#include "base/basictypes.h"
+
+namespace athena {
+
+// The resource manager is monitoring activity changes, low memory conditions
+// and other events to control the activity state (pre-/un-/re-/loading them)
+// to keep enough memory free that no jank/lag will show when new applications
+// are loaded and / or a navigation between applications takes place.
+class ResourceManager {
+ public:
+  // Creates the instance handling the resources.
+  static void Create();
+  static ResourceManager* Get();
+  static void Shutdown();
+
+  ResourceManager();
+  virtual ~ResourceManager();
+
+  // Unit tests can simulate MemoryPressure changes with this call.
+  // Note: Even though the default unit test ResourceManagerDelegte
+  // implementation ensures that the MemoryPressure event will not go off,
+  // this call will also explicitly stop the MemoryPressureNotifier.
+  virtual void SetMemoryPressureAndStopMonitoring(
+      MemoryPressureObserver::MemoryPressure pressure) = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ResourceManager);
+};
+
+}  // namespace athena
+
+#endif  // ATHENA_RESOURCE_MANAGER_PUBLIC_RESOURCE_MANAGER_H_