Update existing uses of /wd4267 to use the GN config

url/BUILD.gn

Index: url/BUILD.gn
diff --git a/url/BUILD.gn b/url/BUILD.gn
index 03e90cb3fff083757c979c0cc9630e69337fefa0..964a08bde6a4e1ef68c2d72912b5d5aef299f0e5 100644
--- a/url/BUILD.gn
+++ b/url/BUILD.gn
@@ -58,11 +58,11 @@ component("url") {
 
   defines = [ "URL_IMPLEMENTATION" ]
 
-  configs += [ ":url_icu_config" ]
-
-  if (is_win) {
-    cflags = [ "/wd4267" ]  # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-  }
+  configs += [
+    ":url_icu_config",
+    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+    "//build/config/compiler:no_size_t_to_int_warning",
+  ]
 
   deps = [
     "//base",
@@ -101,19 +101,15 @@ if (!is_android) {
       "url_util_unittest.cc",
     ]
 
+    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+    configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
+
     #if (is_posix && !is_mac && !is_ios) {
     #  if (use_allocator!="none") {
     #    deps += "//base/allocator"
     #  }
     #}
 
-    if (is_win) {
-      cflags = [
-        # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-        "/wd4267",
-      ]
-    }
-
     deps = [
       ":url",
       "//base",