Rename is_chromeos in chrome/src.

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index d1447cb90a006ad77b6c59f5057447d69f5492e9..12e8eb68427b2f6997bcc752931c54aecec120e1 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -330,7 +330,7 @@ source_set("browser") {
     sources +=
         rebase_path(gypi_values.chrome_browser_win_mac_sources, ".", "//chrome")
   }
-  if (!is_android && !is_ios && !is_chromeos && enable_configuration_policy) {
+  if (!is_android && !is_ios && !is_chromeos_ui && enable_configuration_policy) {
     sources += [
       "net/disk_cache_dir_policy_handler.cc",
       "net/disk_cache_dir_policy_handler.h",
@@ -370,7 +370,7 @@ source_set("browser") {
     sources += rebase_path(gypi_values.chrome_browser_background_sources,
                            ".",
                            "//chrome")
-    if (!use_aura || is_win || is_chromeos) {
+    if (!use_aura || is_win || is_chromeos_ui) {
       sources -= [ "background/background_mode_manager_aura.cc" ]
     }
   }
@@ -407,7 +407,7 @@ source_set("browser") {
                              ".",
                              "//chrome")
     }
-    if (!is_chromeos) {
+    if (!is_chromeos_ui) {
       sources += rebase_path(
               gypi_values.chrome_browser_policy_shared_with_ios_not_chromeos_sources,
               ".",
@@ -478,11 +478,11 @@ source_set("browser") {
       "//device/udev_linux",
     ]
   }
-  if (is_linux && !is_chromeos) {
+  if (is_linux && !is_chromeos_ui) {
     deps += [ "//third_party/speech-dispatcher" ]
   }
 
-  if (is_chromeos) {
+  if (is_chromeos_ui) {
     sources += rebase_path(gypi_values.chrome_browser_chromeos_sources,
                            ".",
                            "//chrome")
@@ -501,7 +501,7 @@ source_set("browser") {
     ]
   }
 
-  if (is_chromeos || is_ios) {
+  if (is_chromeos_ui || is_ios) {
     sources -= [
       "metrics/signin_status_metrics_provider.cc",
       "metrics/signin_status_metrics_provider.h",
@@ -560,7 +560,7 @@ source_set("browser") {
   if (use_nss_certs) {
     sources +=
         rebase_path(gypi_values.chrome_browser_nss_sources, ".", "//chrome")
-    if (is_chromeos) {
+    if (is_chromeos_ui) {
       sources -= [ "net/nss_context_linux.cc" ]
     }
   }
@@ -619,7 +619,7 @@ source_set("browser") {
                            "//chrome")
   }
 
-  if (!is_android && !is_ios && !is_chromeos) {
+  if (!is_android && !is_ios && !is_chromeos_ui) {
     sources +=
         rebase_path(gypi_values.chrome_browser_desktop_sources, ".", "//chrome")
   }
@@ -1084,7 +1084,7 @@ source_set("test_support") {
     deps += [ "//extensions:test_support" ]
   }
 
-  if (is_chromeos) {
+  if (is_chromeos_ui) {
     sources += [
       "chromeos/app_mode/fake_cws.cc",
       "chromeos/app_mode/fake_cws.h",