Rename is_chromeos in chrome/src.

remoting/host/BUILD.gn

Index: remoting/host/BUILD.gn
diff --git a/remoting/host/BUILD.gn b/remoting/host/BUILD.gn
index fed9117bf5728a73bade79a3274a02c0f3c6c2bc..df985cec523b7913ad5b7572ca38679e1b84db91 100644
--- a/remoting/host/BUILD.gn
+++ b/remoting/host/BUILD.gn
@@ -80,7 +80,7 @@ if (is_mac) {  # TODO(GYP) Mac build of remoting host.
       deps += [ "//components/policy:policy" ]
     }
 
-    if (is_linux && !is_chromeos) {
+    if (is_linux && !is_chromeos_ui) {
       libs += [ "pam" ]
     }
 
@@ -89,7 +89,7 @@ if (is_mac) {  # TODO(GYP) Mac build of remoting host.
         "//build/config/linux:x11",
         "//build/config/linux:xrandr",
       ]
-      if (!is_chromeos) {
+      if (!is_chromeos_ui) {
         deps += [ "//build/config/linux/gtk" ]
       }
     } else {
@@ -113,7 +113,7 @@ if (is_mac) {  # TODO(GYP) Mac build of remoting host.
       sources -= [ "desktop_resizer_ozone.cc" ]
     }
 
-    if (is_chromeos) {
+    if (is_chromeos_ui) {
       # TODO(GYP): crbug.com/481627. These should only be included
       # when enable_me2me_host is true.
       sources -= [
@@ -298,10 +298,10 @@ if (is_mac) {  # TODO(GYP) Mac build of remoting host.
       "win/worker_process_launcher_unittest.cc",
     ]
 
-    if (use_ozone || is_chromeos) {
+    if (use_ozone || is_chromeos_ui) {
       sources -= [ "local_input_monitor_unittest.cc" ]
     }
-    if (is_chromeos) {
+    if (is_chromeos_ui) {
       sources -= [ "linux/x_server_clipboard_unittest.cc" ]
     }