Remove renderer notifications of memory pressure.

content/browser/memory/memory_message_filter.cc

-// 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.
-
-#include "content/browser/memory/memory_message_filter.h"
-
-#include "content/browser/memory/memory_pressure_controller_impl.h"
-#include "content/common/memory_messages.h"
-
-namespace content {
-
-MemoryMessageFilter::MemoryMessageFilter(
-    const BrowserChildProcessHost* child_process_host,
-    ProcessType process_type)
-    : BrowserMessageFilter(MemoryMsgStart),
-      process_host_(child_process_host),
-      process_type_(process_type) {
-  DCHECK_NE(process_type_, PROCESS_TYPE_RENDERER);
-}
-
-MemoryMessageFilter::MemoryMessageFilter(
-    const RenderProcessHost* render_process_host)
-    : BrowserMessageFilter(MemoryMsgStart),
-      process_host_(render_process_host),
-      process_type_(PROCESS_TYPE_RENDERER) {}
-
-MemoryMessageFilter::~MemoryMessageFilter() {}
-
-void MemoryMessageFilter::OnFilterAdded(IPC::Channel* channel) {
-  MemoryPressureControllerImpl::GetInstance()->OnMemoryMessageFilterAdded(this);
-}
-
-void MemoryMessageFilter::OnChannelClosing() {
-  MemoryPressureControllerImpl::GetInstance()
-      ->OnMemoryMessageFilterRemoved(this);
-}
-
-bool MemoryMessageFilter::OnMessageReceived(const IPC::Message& message) {
-  return false;
-}
-
-void MemoryMessageFilter::SendSetPressureNotificationsSuppressed(
-    bool suppressed) {
-  Send(new MemoryMsg_SetPressureNotificationsSuppressed(suppressed));
-}
-
-void MemoryMessageFilter::SendSimulatePressureNotification(
-    base::MemoryPressureListener::MemoryPressureLevel level) {
-  Send(new MemoryMsg_SimulatePressureNotification(level));
-}
-
-void MemoryMessageFilter::SendPressureNotification(
-    base::MemoryPressureListener::MemoryPressureLevel level) {
-  Send(new MemoryMsg_PressureNotification(level));
-}
-
-}  // namespace content