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

chrome/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/features.gni")
 import("//build/config/locales.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/ui.gni")
@@ skipping 173 matching lines @@
         "//content/public/app:both",
       ]
       if (enable_plugins && enable_pdf) {
         deps += [ "//pdf" ]
       }
 
       public_deps = [
         ":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",
           "//build/config/linux:xext",
         ]
       }
     }
 
     if (is_mac) {
       sources += [ "app/chrome_exe_main_mac.c" ]
@@ skipping 850 matching lines @@
       "//chrome/app/theme/$branding_path_component/product_logo_48.png",
       "//chrome/tools/build/linux/chrome-wrapper",
       "//third_party/xdg-utils/scripts/xdg-mime",
       "//third_party/xdg-utils/scripts/xdg-settings",
     ]
     outputs = [
       "$root_out_dir/{{source_file_part}}",
     ]
   }
 }