Enable whitelist generation for all builds.

tools/grit/grit_rule.gni

Index: tools/grit/grit_rule.gni
diff --git a/tools/grit/grit_rule.gni b/tools/grit/grit_rule.gni
index b77a24d5e6fb3f2f429bb47c8f71fcea2941774e..6ecadd5718a35e8e5cbd18fac8afa9f2bb269728 100644
--- a/tools/grit/grit_rule.gni
+++ b/tools/grit/grit_rule.gni
@@ -84,8 +84,13 @@ import("//build/config/features.gni")
 import("//build/config/ui.gni")
 
 declare_args() {
-  # Enables used resource whitelist generation.
-  enable_resource_whitelist_generation = false
+  # Enables used resource whitelist generation. Set for official builds only
+  # as a large amount of build output is generated.
+  enable_resource_whitelist_generation = is_official_build
+  if (!is_android && enable_resource_whitelist_generation) {
+    print(
+        "Warning: GN logic for resource whitelists is implemented only for Android")
+  }
 }
 
 grit_defines = []