Pull GN @ 252040, update calls

tools/gn/secondary/tools/grit/grit_rule.gni

Index: tools/gn/secondary/tools/grit/grit_rule.gni
diff --git a/tools/gn/secondary/tools/grit/grit_rule.gni b/tools/gn/secondary/tools/grit/grit_rule.gni
index 735a4da9fecfa04be8030d1df11034d78c94bbb6..06cee4a637d6c3ec96add7ec9d2ef2469c0fc974 100644
--- a/tools/gn/secondary/tools/grit/grit_rule.gni
+++ b/tools/gn/secondary/tools/grit/grit_rule.gni
@@ -24,9 +24,9 @@ template("grit") {
   # These are all passed as arguments to the script so have to be relative to
   # the build directory.
   resource_ids =
-    rebase_path("//tools/gritsettings/resource_ids", ".", root_build_dir)
-  output_dir = rebase_path(target_gen_dir, ".", root_build_dir)
-  source_path = rebase_path(source, ".", root_build_dir)
+    rebase_path("//tools/gritsettings/resource_ids", root_build_dir)
+  output_dir = rebase_path(target_gen_dir, root_build_dir)
+  source_path = rebase_path(source, root_build_dir)
 
   if (!defined(grit_flags)) {
     grit_flags = []  # These are optional so default to empty list.
@@ -36,7 +36,7 @@ template("grit") {
     [ "--inputs", source_path, "-f", resource_ids] + grit_flags, "list lines")
   # The inputs are relative to the current (build) directory, rebase to
   # the current one.
-  grit_inputs = rebase_path(grit_inputs_build_rel, root_build_dir, ".")
+  grit_inputs = rebase_path(grit_inputs_build_rel, root_build_dir)
 
   grit_outputs_build_rel = exec_script(grit_info_script,
     [ "--outputs", "$output_dir", source_path, "-f", resource_ids ] +
@@ -44,7 +44,7 @@ template("grit") {
     "list lines")
   # The inputs are relative to the current (build) directory, rebase to
   # the current one.
-  grit_outputs = rebase_path(grit_outputs_build_rel, root_build_dir, ".")
+  grit_outputs = rebase_path(grit_outputs_build_rel, root_build_dir)
 
   # The current grit setup makes an file in $target_gen_dir/grit/foo.h that
   # the source code expects to include via "grit/foo.h". It would be nice to