Remove renderer notifications of memory pressure.

content/common/BUILD.gn

 # Copyright 2014 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.
 
 import("features.gni")
 import("//build/buildflag_header.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
@@ skipping 210 matching lines @@
     "media/media_player_delegate_messages.h",
     "media/media_player_messages_android.h",
     "media/media_stream_messages.h",
     "media/media_stream_options.cc",
     "media/media_stream_options.h",
     "media/media_stream_track_metrics_host_messages.h",
     "media/midi_messages.h",
     "media/peer_connection_tracker_messages.h",
     "media/surface_view_manager_messages_android.h",
     "media/video_capture.h",
-    "memory_messages.h",
     "message_port.cc",
     "message_port.h",
     "navigation_gesture.h",
     "navigation_params.cc",
     "navigation_params.h",
     "net/url_fetcher.cc",
     "net/url_request_service_worker_data.cc",
     "net/url_request_service_worker_data.h",
     "net/url_request_user_data.cc",
     "net/url_request_user_data.h",
@@ skipping 400 matching lines @@
     "//ui/gfx/mojo",
     "//url/mojo:url_mojom_gurl",
     "//url/mojo:url_mojom_origin",
   ]
 
   component_output_prefix = "content_common_mojo_bindings"
   export_class_attribute = "CONTENT_EXPORT"
   export_define = "CONTENT_IMPLEMENTATION=1"
   export_header = "content/common/content_export.h"
 }