Build FileDescriptorWatcher for NaCl non-SFI

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.
 
 # HOW TO WRITE CONDITIONALS IN THIS FILE
 # ======================================
 #
 # In many other places, one would write a conditional that expresses all the
 # cases when a source file is used or unused, and then either add or subtract
 # it from the sources list in that case
@@ skipping 1106 matching lines @@
       "threading/platform_thread_linux.cc",
     ]
     set_sources_assignment_filter(sources_assignment_filter)
 
     sources -= [
       "cpu.cc",
       "debug/crash_logging.cc",
       "debug/crash_logging.h",
       "debug/stack_trace.cc",
       "debug/stack_trace_posix.cc",
-      "files/file_descriptor_watcher_posix.cc",
-      "files/file_descriptor_watcher_posix.h",
       "files/file_enumerator_posix.cc",
       "files/file_proxy.cc",
       "files/file_util_proxy.cc",
       "files/important_file_writer.cc",
       "files/important_file_writer.h",
       "files/scoped_temp_dir.cc",
       "memory/discardable_memory.cc",
       "memory/discardable_memory.h",
       "memory/discardable_memory_allocator.cc",
       "memory/discardable_memory_allocator.h",
@@ skipping 21 matching lines @@
     ]
 
     if (is_nacl_nonsfi) {
       set_sources_assignment_filter([])
       sources += [ "posix/unix_domain_socket_linux.cc" ]
       set_sources_assignment_filter(sources_assignment_filter)
       sources -= [ "rand_util_nacl.cc" ]
       configs += [ ":nacl_nonsfi_warnings" ]
     } else {
       sources -= [
+        "files/file_descriptor_watcher_posix.cc",
+        "files/file_descriptor_watcher_posix.h",
         "files/file_util.cc",
         "files/file_util.h",
         "files/file_util_posix.cc",
         "json/json_file_value_serializer.cc",
         "json/json_file_value_serializer.h",
         "message_loop/message_pump_libevent.cc",
         "message_loop/message_pump_libevent.h",
         "process/kill_posix.cc",
         "process/launch.cc",
         "process/launch.h",
@@ skipping 1269 matching lines @@
     testonly = true
     deps = [
       ":base_java",
     ]
     java_files = [
       "test/android/java/src/org/chromium/base/ContentUriTestUtils.java",
       "test/android/java/src/org/chromium/base/TestSystemMessageHandler.java",
     ]
   }
 }