Turn FileDescriptorInfo a collection class

content/browser/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("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//content/browser/browser.gni")
 
 source_set("browser") {
   # Only the public target should depend on this. All other targets (even
@@ skipping 106 matching lines @@
     deps += [ "//ui/events" ]
   }
 
   if (is_win) {
     sources += [
       "power_profiler/power_data_provider_ia_win.cc",
       "power_profiler/power_data_provider_ia_win.h",
     ]
     deps += [ "//third_party/power_gadget" ]
   } else {
-    sources += [ "power_profiler/power_data_provider_dummy.cc" ]
+    sources += [
+      "power_profiler/power_data_provider_dummy.cc",
+      "file_descriptor_info_impl.cc",
+      "file_descriptor_info_impl.h",
+    ]
     sources -= [ "renderer_host/web_input_event_aurawin.cc" ]
   }
 
   if (!is_win && !is_mac && !is_android && (!is_linux || !use_udev)) {
     sources += [ "gamepad/gamepad_platform_data_fetcher.cc" ]
   }
 
   if (printing_mode != 0) {
     deps += [ "//printing" ]
   }
@@ skipping 264 matching lines @@
     deps += [
       "//third_party/flac",
       "//third_party/speex",
     ]
   }
 
   if (is_linux && use_dbus) {
       deps += [ "//dbus" ]
   }
 }