Rename is_chromeos in chrome/src.

build/config/features.gni

Index: build/config/features.gni
diff --git a/build/config/features.gni b/build/config/features.gni
index 8ca446dd43d9386c52977656d591e4820d447bdc..4d97ece902fe78f4f5a6e4ad5e113f9a24f696f3 100644
--- a/build/config/features.gni
+++ b/build/config/features.gni
@@ -36,7 +36,7 @@ declare_args() {
   # the commented out logic.
   # Eventually we want this to be:
   #   enable_nacl = !is_ios && !is_android
-  enable_nacl = (is_linux && !is_chromeos && current_cpu == "x64") || is_nacl
+  enable_nacl = (is_linux && !is_chromeos_ui && current_cpu == "x64") || is_nacl
   enable_nacl_untrusted = enable_nacl
   enable_pnacl = enable_nacl_untrusted
 
@@ -82,7 +82,7 @@ declare_args() {
 
   enable_google_now = !is_ios && !is_android
 
-  enable_one_click_signin = is_win || is_mac || (is_linux && !is_chromeos)
+  enable_one_click_signin = is_win || is_mac || (is_linux && !is_chromeos_ui)
 
   enable_remoting = !is_ios && !is_android
 
@@ -139,7 +139,7 @@ enable_spellcheck = !is_ios
 use_browser_spellchecker = is_android || is_mac
 
 # Enable basic printing support and UI.
-enable_basic_printing = !is_chromeos
+enable_basic_printing = !is_chromeos_ui
 
 # Enable printing with print preview. It does not imply
 # enable_basic_printing. It's possible to build Chrome with preview only.
@@ -176,29 +176,29 @@ win_pdf_metafile_for_printing = true
 
 # Whether we are using the rlz library or not.  Platforms like Android send
 # rlz codes for searches but do not use the library.
-enable_rlz_support = is_win || is_mac || is_ios || is_chromeos
+enable_rlz_support = is_win || is_mac || is_ios || is_chromeos_ui
 enable_rlz = is_chrome_branded && enable_rlz_support
 
-enable_settings_app = enable_app_list && !is_chromeos
+enable_settings_app = enable_app_list && !is_chromeos_ui
 
 enable_service_discovery = enable_mdns || is_mac
 
 enable_wifi_bootstrapping = is_win || is_mac
 
 # Image loader extension is enabled on ChromeOS only.
-enable_image_loader_extension = is_chromeos
+enable_image_loader_extension = is_chromeos_ui
 
 # Chrome OS: whether to also build the upcoming version of
 # ChromeVox, which can then be enabled via a command-line switch.
 enable_chromevox_next = false
 
 # Use brlapi from brltty for braille display support.
-use_brlapi = is_chromeos
+use_brlapi = is_chromeos_ui
 
 # Option controlling the use of GConf (the classic GNOME configuration
 # system).
 # TODO(GYP) also require !embedded to enable.
-use_gconf = is_linux && !is_chromeos
+use_gconf = is_linux && !is_chromeos_ui
 
 # Hangout services is an extension that adds extra features to Hangouts.
 # For official GYP builds, this flag is set, it will likely need to be
@@ -206,7 +206,7 @@ use_gconf = is_linux && !is_chromeos
 enable_hangout_services_extension = false
 
 # Whether to back up data before sync.
-enable_pre_sync_backup = is_win || is_mac || (is_linux && !is_chromeos)
+enable_pre_sync_backup = is_win || is_mac || (is_linux && !is_chromeos_ui)
 
 # WebVR support disabled until platform implementations have been added
 enable_webvr = false