GN build: GPU work, Windows compile, "check" errors

third_party/libwebp/BUILD.gn

Index: third_party/libwebp/BUILD.gn
diff --git a/third_party/libwebp/BUILD.gn b/third_party/libwebp/BUILD.gn
index cf7dccda55fa5e9ce8111360b3e11e81e1d9fc28..48e548ed698d3533685b7e8e8e50a144271f9e6b 100644
--- a/third_party/libwebp/BUILD.gn
+++ b/third_party/libwebp/BUILD.gn
@@ -20,6 +20,10 @@ source_set("libwebp_dec") {
     "dec/vp8l.c",
     "dec/webp.c",
   ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+
   deps = [
     ":libwebp_dsp",
 # TODO(GYP):
@@ -53,6 +57,9 @@ source_set("libwebp_dsp") {
     "dsp/upsampling_sse2.c",
     "dsp/yuv.c",
   ]
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+
   all_dependent_configs = [
     ":libwebp_config"
   ]
@@ -120,6 +127,9 @@ source_set("libwebp_enc") {
     "enc/vp8l.c",
     "enc/webpenc.c",
   ]
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+
   all_dependent_configs = [
     ":libwebp_config"
   ]
@@ -141,6 +151,9 @@ source_set("libwebp_utils") {
     "utils/thread.c",
     "utils/utils.c",
   ]
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+
   all_dependent_configs = [
     ":libwebp_config"
   ]