Revert 283946 "GN fixes for the Windows build."

trunk/src/ui/views/BUILD.gn

Index: trunk/src/ui/views/BUILD.gn
===================================================================
--- trunk/src/ui/views/BUILD.gn	(revision 283947)
+++ trunk/src/ui/views/BUILD.gn	(working copy)
@@ -58,18 +58,13 @@
     sources -= [
       "linux_ui/linux_ui.h",
       "linux_ui/linux_ui.cc",
+      "linux_ui/status_icon_linux.h",
+      "linux_ui/status_icon_linux.cc",
       "linux_ui/window_button_order_observer.h",
       "linux_ui/window_button_order_provider.cc",
     ]
   }
 
-  if (is_chromeos) {
-    sources -= [
-      "linux_ui/status_icon_linux.h",
-      "linux_ui/status_icon_linux.cc",
-    ]
-  }
-
   if (is_win) {
     sources += gypi_values.views_win_sources
     cflags = [ "/wd4267" ]  # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.