🐳 Move linux pkg_config() calls into separate BUILD.gn files

skia/BUILD.gn

Index: skia/BUILD.gn
diff --git a/skia/BUILD.gn b/skia/BUILD.gn
index ecb0d0099876e997a2b878d183d5d52ff5881736..cefa7755ee664aa67a1e424bebffabf1c4081a61 100644
--- a/skia/BUILD.gn
+++ b/skia/BUILD.gn
@@ -19,8 +19,7 @@ skia_support_pdf = !is_ios && (enable_basic_printing || enable_print_preview)
 gypi_chromium_skia_defines =
     exec_script("//build/gypi_to_gn.py",
                 [
-                  rebase_path(
-                      "//skia/chromium_skia_defines.gypi"),
+                  rebase_path("//skia/chromium_skia_defines.gypi"),
                   "--replace=<(skia_include_path)=//third_party/skia/include",
                   "--replace=<(skia_src_path)=//third_party/skia/src",
                 ],
@@ -467,7 +466,7 @@ component("skia") {
 
   if (is_linux) {
     if (use_pango) {
-      configs += [ "//build/config/linux:pangocairo" ]
+      configs += [ "//build/config/linux/pangocairo" ]
     }
     deps += [
       "//build/linux:fontconfig",