Create base::win::MemoryPressureMonitor class.

base/BUILD.gn

 # Copyright (c) 2013 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("//build/config/ui.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
@@ skipping 581 matching lines @@
     "win/event_trace_controller.cc",
     "win/event_trace_controller.h",
     "win/event_trace_provider.cc",
     "win/event_trace_provider.h",
     "win/i18n.cc",
     "win/i18n.h",
     "win/iat_patch_function.cc",
     "win/iat_patch_function.h",
     "win/iunknown_impl.cc",
     "win/iunknown_impl.h",
+    "win/memory_pressure_monitor.cc",
+    "win/memory_pressure_monitor.h",
     "win/message_window.cc",
     "win/message_window.h",
     "win/metro.cc",
     "win/metro.h",
     "win/object_watcher.cc",
     "win/object_watcher.h",
     "win/registry.cc",
     "win/registry.h",
     "win/resource_util.cc",
     "win/resource_util.h",
@@ skipping 663 matching lines @@
     "values_unittest.cc",
     "version_unittest.cc",
     "vlog_unittest.cc",
     "win/dllmain.cc",
     "win/enum_variant_unittest.cc",
     "win/event_trace_consumer_unittest.cc",
     "win/event_trace_controller_unittest.cc",
     "win/event_trace_provider_unittest.cc",
     "win/i18n_unittest.cc",
     "win/iunknown_impl_unittest.cc",
+    "win/memory_pressure_monitor_unittest.cc",
     "win/message_window_unittest.cc",
     "win/object_watcher_unittest.cc",
     "win/pe_image_unittest.cc",
     "win/registry_unittest.cc",
     "win/scoped_bstr_unittest.cc",
     "win/scoped_comptr_unittest.cc",
     "win/scoped_process_information_unittest.cc",
     "win/scoped_variant_unittest.cc",
     "win/shortcut_unittest.cc",
     "win/startup_information_unittest.cc",
@@ skipping 203 matching lines @@
 
   # GYP: //base.gyp:base_java_unittest_support
   android_library("base_java_unittest_support") {
     deps = [
       ":base_java",
     ]
     java_files =
         [ "test/android/java/src/org/chromium/base/ContentUriTestUtils.java" ]
   }
 }