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 b13909c6d50c961ee97f9cfd645627d81d6214a9..7ecfcde5f5f0aadbbdc16da57f8e810232729c5c 100644
--- a/chrome/browser/ui/BUILD.gn
+++ b/chrome/browser/ui/BUILD.gn
@@ -163,7 +163,7 @@ source_set("ui") {
       "//chrome/browser/safe_browsing:report_proto",
     ]
   }
-  if (is_chromeos) {
+  if (is_chromeos_ui) {
     sources += rebase_path(gypi_values.chrome_browser_ui_chromeos_sources,
                            ".",
                            "//chrome")
@@ -185,7 +185,7 @@ source_set("ui") {
       "//ash/strings",
       "//components/user_manager",
     ]
-    if (!is_chromeos) {
+    if (!is_chromeos_ui) {
       sources += rebase_path(gypi_values.chrome_browser_ui_ash_non_chromeos,
                              ".",
                              "//chrome")
@@ -205,7 +205,7 @@ source_set("ui") {
       deps += [ "//extensions/components/native_app_window" ]
     }
 
-    if (!is_chromeos && (!is_mac || mac_views_browser)) {
+    if (!is_chromeos_ui && (!is_mac || mac_views_browser)) {
       sources +=
           rebase_path(gypi_values.chrome_browser_ui_views_non_chromeos_sources,
                       ".",
@@ -222,7 +222,7 @@ source_set("ui") {
                 ".",
                 "//chrome")
       }
-      if (is_chromeos) {
+      if (is_chromeos_ui) {
         # TODO(GYP): crbug.com/481629. These files should probably not be
         # a part of ui_views_non_mac_sources at all.
         sources -= [
@@ -264,7 +264,7 @@ source_set("ui") {
       "//ui/keyboard:resources",
       "//ui/wm",
     ]
-    if (!is_chromeos) {
+    if (!is_chromeos_ui) {
       sources += rebase_path(gypi_values.chrome_browser_ui_aura_non_chromeos,
                              ".",
                              "//chrome")
@@ -398,7 +398,7 @@ source_set("ui") {
                              "//chrome")
       configs += [ "//build/config/linux:x11" ]
       deps += [ "//ui/events/devices" ]
-      if (is_chromeos) {
+      if (is_chromeos_ui) {
         sources -= [ "views/tabs/window_finder_x11.cc" ]
       }
     }