Architecture for cross-process memory notification suppressing

content/browser/memory/memory_message_filter.h

+// 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_BROWSER_MEMORY_MEMORY_MESSAGE_FILTER_H_
+#define CONTENT_BROWSER_MEMORY_MEMORY_MESSAGE_FILTER_H_
+
+#include "content/common/content_export.h"
+#include "content/public/browser/browser_message_filter.h"
+
+namespace content {
+
+// This class sends memory messages from the browser process.
+// See also: child_memory_message_filter.h
+class CONTENT_EXPORT MemoryMessageFilter : public BrowserMessageFilter {
+ public:
+  MemoryMessageFilter();
+
+  // BrowserMessageFilter implementation.
+  void OnFilterAdded(IPC::Sender* sender) override;
+  void OnChannelClosing() override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+
+  void SendSetPressureNotificationsSuppressed(bool suppressed);
+
+ protected:
+  ~MemoryMessageFilter() override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MemoryMessageFilter);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_MEMORY_MEMORY_MESSAGE_FILTER_H_