Make memory pressure IPC accessible from content/public.

content/public/browser/memory_pressure.cc

+// Copyright (c) 2016 The Chromium Authors. All rights reserved.

[petrcermak, 2016/01/28 09:55:05]

nit: Drop "(c)"
(https://www.chromium.org/developers/coding-style#TOC-File-headers)

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/public/browser/memory_pressure.h"
+
+#include "content/browser/memory/memory_pressure_controller.h"
+
+namespace content {
+
+void SendPressureNotification(
+    const BrowserChildProcessHost* child_process_host,
+    base::MemoryPressureListener::MemoryPressureLevel level) {
+  MemoryPressureController::GetInstance()->SendPressureNotification(
+      child_process_host, level);
+}
+
+void SendPressureNotification(
+    const RenderProcessHost* render_process_host,
+    base::MemoryPressureListener::MemoryPressureLevel level) {
+  MemoryPressureController::GetInstance()->SendPressureNotification(
+      render_process_host, level);
+}
+
+}  // namespace content