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",

[Nico, 2015/05/05 21:25:11]

can you call this memory_pressure_monitor_win for consistency with cros and mac?

[chrisha, 2015/05/06 02:40:24]

I originally had that, but removed it at grt@'s request. I'm all for
consistency, and can fix the others while I'm at it. grt@ is arguing that it's
redundant, given that it's in a 'win' specific directory and namespace. Your
opinion? 

[grt (UTC plus 2), 2015/05/06 13:26:36]

We use the base::win namespace for files in src/base/win, so I think putting
"Win" in the file/class name isn't needed. After I left the comments about this
I noticed that the other implementations of the monitor had the platform name in
them. I see the "consistency with the other monitors" sentiment, but I
personally prefer consistency with the rest of base/win.

[Nico, 2015/05/06 22:57:14]

On Mac, it's also the only file named _mac. I'm fine with renaming the existing
other two files to not have the suffix, but it should be consistent

+    "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" ]
   }
 }