[GN] Guard the "pangocairo" config with (use_pango || use_cairo).

chrome/BUILD.gn

Index: chrome/BUILD.gn
diff --git a/chrome/BUILD.gn b/chrome/BUILD.gn
index 96bb583ae3b3c20531330cf38cac5260e17f230b..983d30fc405625f0090af91e43f44215a8962e78 100644
--- a/chrome/BUILD.gn
+++ b/chrome/BUILD.gn
@@ -191,13 +191,15 @@ if (!is_android) {
         ":xdg_mime",  # Needs to be public for installer to consume files.
       ]
 
-      # Needed for chrome_main.cc initialization of libraries.
-      configs += [ "//build/config/linux:pangocairo" ]
-
       # GYP has this in a 'profiling==0 and linux_disable_pie==0' condition.
       # but GN doesn't have either of these flags.
       ldflags = [ "-pie" ]
 
+      if (use_pango || use_cairo) {
+        # Needed for chrome_main.cc initialization of libraries.
+        configs += [ "//build/config/linux:pangocairo" ]
+      }
+
       if (use_x11) {
         configs += [
           "//build/config/linux:x11",