Revert of Architecture for cross-process memory notification suppressing

content/browser/memory/memory_message_filter.cc

Index: content/browser/memory/memory_message_filter.cc
diff --git a/content/browser/memory/memory_message_filter.cc b/content/browser/memory/memory_message_filter.cc
deleted file mode 100644
index b386717789ea162798019087a797fc22258c309c..0000000000000000000000000000000000000000
--- a/content/browser/memory/memory_message_filter.cc
+++ /dev/null
@@ -1,34 +0,0 @@
-// 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.h"
-#include "content/common/memory_messages.h"
-
-namespace content {
-
-MemoryMessageFilter::MemoryMessageFilter()
-    : BrowserMessageFilter(MemoryMsgStart) {}
-
-MemoryMessageFilter::~MemoryMessageFilter() {}
-
-void MemoryMessageFilter::OnFilterAdded(IPC::Sender* sender) {
-  MemoryPressureController::GetInstance()->OnMemoryMessageFilterAdded(this);
-}
-
-void MemoryMessageFilter::OnChannelClosing() {
-  MemoryPressureController::GetInstance()->OnMemoryMessageFilterRemoved(this);
-}
-
-bool MemoryMessageFilter::OnMessageReceived(const IPC::Message& message) {
-  return false;
-}
-
-void MemoryMessageFilter::SendSetPressureNotificationsSuppressed(
-    bool suppressed) {
-  Send(new MemoryMsg_SetPressureNotificationsSuppressed(suppressed));
-}
-
-}  // namespace content