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ui/gfx/range/BUILD.gn

 # Copyright 2016 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.
 
 component("range") {
   sources = [
     "gfx_range_export.h",
     "range.cc",
     "range.h",
     "range_f.cc",
     "range_f.h",
     "range_mac.mm",
     "range_win.cc",
   ]
 
+  if (is_ios) {
+    set_sources_assignment_filter([])
+    sources += [ "range_mac.mm" ]
+    set_sources_assignment_filter(sources_assignment_filter)
+  }
+
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 
   defines = [ "GFX_RANGE_IMPLEMENTATION" ]
 
   deps = [
     "//base",
     "//ui/gfx:gfx_export",
   ]
 }