Remove redundant chromeos checks from GN build.

ui/display/BUILD.gn

Index: ui/display/BUILD.gn
diff --git a/ui/display/BUILD.gn b/ui/display/BUILD.gn
index 7519929049c01db6cd7152fc2294167e84484bee..e664b1ae5abdf4583f6f7c17a3b43bca6e111fc5 100644
--- a/ui/display/BUILD.gn
+++ b/ui/display/BUILD.gn
@@ -42,12 +42,14 @@ if (is_chromeos) {
 
     deps = [
       "//base",
+      "//ui/display/types",
       "//ui/display/util",
       "//ui/gfx",
       "//ui/gfx/geometry",
     ]
 
     if (use_x11) {
+      sources -= [ "chromeos/ozone/display_configurator_ozone.cc" ]
       configs += [
         "//build/config/linux:x11",
         "//build/config/linux:xext",
@@ -55,35 +57,28 @@ if (is_chromeos) {
         "//build/config/linux:xrandr",
       ]
       deps += [ "//ui/events/platform" ]
-      if (is_chromeos) {
-        sources -= [ "chromeos/ozone/display_configurator_ozone.cc" ]
-      }
     }
 
-    if (is_chromeos) {
-      deps += [ "//ui/display/types" ]
-      if (use_x11) {
-        deps += [ "//ui/gfx/x" ]
-      }
+    deps += []
+    if (use_x11) {
+      deps += [ "//ui/gfx/x" ]
     }
 
     if (use_ozone) {
       deps += [ "//ui/ozone" ]
-      if (is_chromeos) {
-        sources -= [
-          "chromeos/x11/display_configurator_x11.cc",
-          "chromeos/x11/display_mode_x11.cc",
-          "chromeos/x11/display_mode_x11.h",
-          "chromeos/x11/display_snapshot_x11.cc",
-          "chromeos/x11/display_snapshot_x11.h",
-          "chromeos/x11/display_util_x11.cc",
-          "chromeos/x11/display_util_x11.h",
-          "chromeos/x11/native_display_delegate_x11.cc",
-          "chromeos/x11/native_display_delegate_x11.h",
-          "chromeos/x11/native_display_event_dispatcher_x11.cc",
-          "chromeos/x11/native_display_event_dispatcher_x11.h",
-        ]
-      }
+      sources -= [
+        "chromeos/x11/display_configurator_x11.cc",
+        "chromeos/x11/display_mode_x11.cc",
+        "chromeos/x11/display_mode_x11.h",
+        "chromeos/x11/display_snapshot_x11.cc",
+        "chromeos/x11/display_snapshot_x11.h",
+        "chromeos/x11/display_util_x11.cc",
+        "chromeos/x11/display_util_x11.h",
+        "chromeos/x11/native_display_delegate_x11.cc",
+        "chromeos/x11/native_display_delegate_x11.h",
+        "chromeos/x11/native_display_event_dispatcher_x11.cc",
+        "chromeos/x11/native_display_event_dispatcher_x11.h",
+      ]
     }
   }
 
@@ -101,13 +96,10 @@ if (is_chromeos) {
     ]
     deps = [
       "//base",
+      "//ui/display/types",
       "//ui/gfx",
       "//ui/gfx/geometry",
     ]
-
-    if (is_chromeos) {
-      deps += [ "//ui/display/types" ]
-    }
   }
 
   source_set("test_support") {