Revert of Un-nest configs in GN files.

third_party/cld_2/BUILD.gn

Index: third_party/cld_2/BUILD.gn
diff --git a/third_party/cld_2/BUILD.gn b/third_party/cld_2/BUILD.gn
index 3edb31dae64f1aa62507195832bf80be55cb0f33..303dcbf53a8d2427da61e03450e1265f23ad1040 100644
--- a/third_party/cld_2/BUILD.gn
+++ b/third_party/cld_2/BUILD.gn
@@ -33,14 +33,6 @@
 
 cld2_table_size = 2
 
-config("cld2_data_warnings") {
-  visibility = [ ":*" ]
-  if (is_clang) {
-    # The generated files don't have braces around subobject initializers.
-    cflags = [ "-Wno-missing-braces" ]
-  }
-}
-
 source_set("cld2_data") {
   sources = gypi_values.cld2_data_sources
   if (cld2_table_size == 0) {
@@ -54,11 +46,15 @@
     "src/public",
   ]
 
+  config("cld2_data_warnings") {
+    if (is_clang) {
+      # The generated files don't have braces around subobject initializers.
+      cflags = [ "-Wno-missing-braces" ]
+    }
+  }
   configs -= [ "//build/config/compiler:chromium_code" ]
-  configs += [
-    ":cld2_data_warnings",
-    "//build/config/compiler:no_chromium_code",
-  ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+  configs += [ ":cld2_data_warnings" ]
 }
 
 # As in the corresponding gyp file, this just builds the core interfaces for