Architecture for cross-process memory notification suppressing

content/child/memory/child_memory_message_filter.h

Index: content/child/memory/child_memory_message_filter.h
diff --git a/content/child/memory/child_memory_message_filter.h b/content/child/memory/child_memory_message_filter.h
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+// Copyright 2015 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_CHILD_MEMORY_CHILD_MEMORY_MESSAGE_FILTER_H_
+#define CONTENT_CHILD_MEMORY_CHILD_MEMORY_MESSAGE_FILTER_H_
+
+#include "ipc/message_filter.h"
+
+namespace content {
+namespace memory {
+
+// This class sends and receives memory messages on child processes.
+// See also: memory_message_filter.h
+class ChildMemoryMessageFilter : public IPC::MessageFilter {
+ public:
+  ChildMemoryMessageFilter();
+
+  // IPC::MessageFilter implementation.
+  void OnFilterAdded(IPC::Sender* sender) override;
+  void OnFilterRemoved() override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+
+ protected:
+  ~ChildMemoryMessageFilter() override;
+
+ private:
+  void OnSetPressureNotificationsSuppressed(bool suppressed);
+
+  IPC::Sender* sender_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChildMemoryMessageFilter);
+};
+
+}  // namespace memory
+}  // namespace content
+
+#endif  // CONTENT_CHILD_MEMORY_CHILD_MEMORY_MESSAGE_FILTER_H_