harfbuzz-ng: make use of the use_glib gn arg

third_party/harfbuzz-ng/BUILD.gn

Index: third_party/harfbuzz-ng/BUILD.gn
diff --git a/third_party/harfbuzz-ng/BUILD.gn b/third_party/harfbuzz-ng/BUILD.gn
index 4b88d7c47c8d120fb68a4aacb5573b6a3512e486..682c192f58779b409c363802c706a10aed244fca 100644
--- a/third_party/harfbuzz-ng/BUILD.gn
+++ b/third_party/harfbuzz-ng/BUILD.gn
@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
+import("//build/config/features.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/ui.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
@@ -197,10 +198,14 @@ if (use_system_harfbuzz) {
       deps += [ "//build/linux:freetype2" ]
       configs -= [ "//build/config/gcc:symbol_visibility_hidden" ]
       configs += [ "//build/config/gcc:symbol_visibility_default" ]
-      configs += [ "//build/config/linux:glib" ]
       sources += [
         "src/hb-ft.cc",
         "src/hb-ft.h",
+      ]
+    }
+    if (use_glib) {
+      configs += [ "//build/config/linux:glib" ]
+      sources += [
         "src/hb-glib.cc",
         "src/hb-glib.h",
       ]