Move configs out of targets in GN build files.

third_party/BUILD.gn

 # Copyright 2014 PDFium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 group("third_party") {
   deps = [
     ":bigint",
     ":fx_freetype",
     ":pdfium_base",
   ]
@@ skipping 12 matching lines @@
     "bigint/BigIntegerUtils.cc",
     "bigint/BigIntegerUtils.hh",
     "bigint/BigUnsigned.cc",
     "bigint/BigUnsigned.hh",
     "bigint/BigUnsignedInABase.cc",
     "bigint/BigUnsignedInABase.hh",
     "bigint/NumberlikeArray.hh",
   ]
 }
 
+config("fx_freetype_warnings") {
+  visibility = [ ":*" ]
+  if (is_clang) {
+    # open_face_PS_from_sfnt_stream() and open_face_from_buffer() in
+    # ftbase.h are unused.
+    cflags = [ "-Wno-unused-function" ]
+  }
+}
+
 # Tests may link against this even if the production library doesn't,
 # so it needs to be separate from it.
 static_library("fx_freetype") {
-  config("fx_freetype_warnings") {
-    if (is_clang) {
-      # open_face_PS_from_sfnt_stream() and open_face_from_buffer() in
-      # ftbase.h are unused.
-      cflags = [ "-Wno-unused-function" ]
-    }
-  }
-
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
     "//third_party/pdfium:pdfium_config",
     ":fx_freetype_warnings",
   ]
   defines = [ "FT2_BUILD_LIBRARY" ]
   sources = [
     "freetype/include/freetype.h",
     "freetype/include/ft2build.h",
@@ skipping 20 matching lines @@
     "freetype/src/pshinter/pshinter.c",
     "freetype/src/psnames/psmodule.c",
     "freetype/src/raster/raster.c",
     "freetype/src/sfnt/sfnt.c",
     "freetype/src/smooth/smooth.c",
     "freetype/src/truetype/truetype.c",
     "freetype/src/type1/type1.c",
   ]
 }
 
+config("fx_agg_warnings") {
+  visibility = [ ":*" ]
+  if (is_clang) {
+    # calc_butt_cap() in agg_vcgen_stroke.cpp is unused.
+    cflags = [ "-Wno-unused-function" ]
+  }
+}
+
 source_set("fx_agg") {
-  config("fx_agg_warnings") {
-    if (is_clang) {
-      # calc_butt_cap() in agg_vcgen_stroke.cpp is unused.
-      cflags = [ "-Wno-unused-function" ]
-    }
-  }
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
     "//third_party/pdfium:pdfium_config",
     ":fx_agg_warnings",
   ]
   sources = [
     "agg23/agg_basics.h",
     "agg23/agg_clip_liang_barsky.h",
     "agg23/agg_conv_dash.h",
     "agg23/agg_conv_stroke.h",
     "agg23/agg_curves.cpp",
     "agg23/agg_curves.h",
     "agg23/agg_path_storage.cpp",
     "agg23/agg_path_storage.h",
     "agg23/agg_rasterizer_scanline_aa.cpp",
     "agg23/agg_rasterizer_scanline_aa.h",
     "agg23/agg_renderer_scanline.h",
     "agg23/agg_rendering_buffer.h",
     "agg23/agg_scanline_u.h",
     "agg23/agg_vcgen_dash.cpp",
     "agg23/agg_vcgen_stroke.cpp",
   ]
 }
 
+config("fx_lcms2_warnings") {
+  visibility = [ ":*" ]
+  if (is_clang) {
+    cflags = [
+      # cmslut.cc is sloppy with aggregate initialization. Version 2.7 of this
+      # library doesn't appear to have this problem.
+      "-Wno-missing-braces",
+      # FindPrev() in cmsplugin.c is unused.
+      "-Wno-unused-function",
+    ]
+  }
+}
+
 source_set("fx_lcms2") {
-  config("fx_lcms2_warnings") {
-    if (is_clang) {
-      cflags = [
-        # cmslut.cc is sloppy with aggregate initialization. Version 2.7 of this
-        # library doesn't appear to have this problem.
-        "-Wno-missing-braces",
-        # FindPrev() in cmsplugin.c is unused.
-        "-Wno-unused-function",
-      ]
-    }
-  }
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
     "//third_party/pdfium:pdfium_config",
     ":fx_lcms2_warnings",
   ]
   sources = [
     "lcms2-2.6/include/lcms2.h",
     "lcms2-2.6/include/lcms2_plugin.h",
     "lcms2-2.6/src/cmscam02.c",
@@ skipping 153 matching lines @@
     "base/logging.h",
     "base/macros.h",
     "base/nonstd_unique_ptr.h",
     "base/numerics/safe_conversions.h",
     "base/numerics/safe_conversions_impl.h",
     "base/numerics/safe_math.h",
     "base/numerics/safe_math_impl.h",
     "base/template_util.h",
   ]
 }