Refactor incompatible pointer type to a config

build/secondary/third_party/nss/BUILD.gn

Index: build/secondary/third_party/nss/BUILD.gn
diff --git a/build/secondary/third_party/nss/BUILD.gn b/build/secondary/third_party/nss/BUILD.gn
index 25d449e14dc171b3635d59ff3d54e022fd3cf196..73b9711a3caa5003a3de62df019e18561cd724e7 100644
--- a/build/secondary/third_party/nss/BUILD.gn
+++ b/build/secondary/third_party/nss/BUILD.gn
@@ -220,6 +220,9 @@ if (is_linux) {
     configs += [
       "//build/config/compiler:no_chromium_code",
       "//build/config/compiler:no_size_t_to_int_warning",
+
+      # nspr passes "const char*" through "void*".
+      "//build/compiler:no_incompatible_pointer_warnings",
     ]
 
     cflags = []
@@ -326,9 +329,6 @@ if (is_linux) {
         # prlink.c on mac.
         "-Wno-deprecated-declarations",
 
-        # nspr passes "const char*" through "void*".
-        "-Wno-incompatible-pointer-types",
-
         # nspr passes "int*" through "unsigned int*".
         "-Wno-pointer-sign",
       ]
@@ -885,6 +885,9 @@ if (is_linux) {
     configs += [
       "//build/config/compiler:no_chromium_code",
       "//build/config/compiler:no_size_t_to_int_warning",
+
+      # nss passes "const char*" through "void*".
+      "//build/compiler:no_incompatible_pointer_warnings",
     ]
     public_configs = [ ":nss_static_config" ]
 
@@ -1182,9 +1185,6 @@ if (is_linux) {
         # nss doesn"t explicitly cast between different enum types.
         "-Wno-conversion",
 
-        # nss passes "const char*" through "void*".
-        "-Wno-incompatible-pointer-types",
-
         # nss prefers `a && b || c` over `(a && b) || c`.
         "-Wno-logical-op-parentheses",