Rename is_chromeos in chrome/src.

chrome/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/chrome_build.gni")
 import("//build/config/features.gni")
 import("//build/config/locales.gni")
 import("//build/config/ui.gni")
 import("//build/config/win/manifest.gni")
 import("//chrome/chrome_repack_locales.gni")
@@ skipping 426 matching lines @@
     "//chrome/browser/resources:translate_internals_resources",
   ]
   if (!is_ios) {
     deps += [
       "//chrome/browser/resources:component_extension_resources",
       "//chrome/browser/resources:options_resources",
       "//chrome/browser/resources:settings_resources",
     ]
   }
 
-  if (is_chromeos) {
+  if (use_cros_fe) {
     deps += [ "//chrome/browser/resources/chromeos/chromevox" ]
   }
 
   if (enable_extensions) {
     deps += [
       "//chrome/browser/resources:quota_internals_resources",
       "//chrome/browser/resources:sync_file_system_internals_resources",
     ]
   }
 }
@@ skipping 98 matching lines @@
       "$root_gen_dir/blink/public/resources/blink_resources.pak",
       "$root_gen_dir/content/browser/tracing/tracing_resources.pak",
       "$root_gen_dir/content/content_resources.pak",
     ]
     deps += [
       "//content:resources",
       "//content/browser/tracing:resources",
       "//third_party/WebKit/public:resources",
     ]
   }
-  if (is_chromeos) {
+  if (use_cros_fe) {
     sources += [ "$root_gen_dir/ui/file_manager/file_manager_resources.pak" ]
     deps += [ "//ui/file_manager:resources" ]
   }
   if (enable_extensions) {
     sources += [
       "$root_gen_dir/chrome/extensions_api_resources.pak",
       "$root_gen_dir/extensions/extensions_renderer_resources.pak",
       "$root_gen_dir/extensions/extensions_resources.pak",
     ]
     deps += [
@@ skipping 103 matching lines @@
     }
     if (use_ash) {
       sources +=
           [ "$root_gen_dir/ash/resources/ash_resources_${percent}_percent.pak" ]
       deps += [ "//ash/resources" ]
     }
     if (toolkit_views) {
       sources += [ "$root_gen_dir/ui/views/resources/views_resources_${percent}_percent.pak" ]
       deps += [ "//ui/views/resources" ]
     }
-    if (is_chromeos) {
+    if (use_cros_fe) {
       sources += [ "$root_gen_dir/ui/chromeos/resources/ui_chromeos_resources_${percent}_percent.pak" ]
       deps += [ "//ui/chromeos/resources" ]
     }
     if (enable_extensions) {
       sources += [ "$root_gen_dir/extensions/extensions_browser_resources_${percent}_percent.pak" ]
       deps += [ "//extensions:extensions_browser_resources" ]
     }
 
     output = repack_output_file
   }
@@ skipping 210 matching lines @@
       rebase_path(chrome_binary, root_build_dir),
       rebase_path(symbol_file, root_build_dir),
     ]
 
     deps = [
       ":chrome",
       dump_syms_label,
     ]
   }
 }