Rename is_chromeos in chrome/src.

chrome/browser/ui/BUILD.gn

Index: chrome/browser/ui/BUILD.gn
diff --git a/chrome/browser/ui/BUILD.gn b/chrome/browser/ui/BUILD.gn
index 089a8682c71d6a3cd8262855fcb7d9308e1a676d..dbd7f8a8c8f700571a72d128dc92ad5a10c28ead 100644
--- a/chrome/browser/ui/BUILD.gn
+++ b/chrome/browser/ui/BUILD.gn
@@ -164,14 +164,14 @@ source_set("ui") {
     ]
   }
 
-  if (is_chromeos && !is_official_build) {
+  if (use_cros_fe && !is_official_build) {
     sources +=
         rebase_path(gypi_values.chrome_browser_ui_chromeos_non_official_sources,
                     ".",
                     "//chrome")
   }
 
-  if (is_chromeos) {
+  if (use_cros_fe) {
     sources += rebase_path(gypi_values.chrome_browser_ui_chromeos_sources,
                            ".",
                            "//chrome")
@@ -193,7 +193,7 @@ source_set("ui") {
       "//ash/strings",
       "//components/user_manager",
     ]
-    if (!is_chromeos) {
+    if (!use_cros_fe) {
       sources += rebase_path(gypi_values.chrome_browser_ui_ash_non_chromeos,
                              ".",
                              "//chrome")
@@ -213,7 +213,7 @@ source_set("ui") {
       deps += [ "//extensions/components/native_app_window" ]
     }
 
-    if (!is_chromeos && (!is_mac || mac_views_browser)) {
+    if (!use_cros_fe && (!is_mac || mac_views_browser)) {
       sources +=
           rebase_path(gypi_values.chrome_browser_ui_views_non_chromeos_sources,
                       ".",
@@ -262,7 +262,7 @@ source_set("ui") {
       "//ui/keyboard:resources",
       "//ui/wm",
     ]
-    if (!is_chromeos) {
+    if (!use_cros_fe) {
       sources += rebase_path(gypi_values.chrome_browser_ui_aura_non_chromeos,
                              ".",
                              "//chrome")
@@ -396,7 +396,7 @@ source_set("ui") {
                              "//chrome")
       configs += [ "//build/config/linux:x11" ]
       deps += [ "//ui/events/devices" ]
-      if (is_chromeos) {
+      if (use_cros_fe) {
         sources -= [ "views/tabs/window_finder_x11.cc" ]
       }
     }