Rename .bzl to .scl in accordance with design doc guidance.

Bug: 528225104
Change-Id: I6d8d27566d32888225488c10aa82bcfe6a6a6964
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/24700
Reviewed-by: Takuto Ikuta <tikuta@google.com>
Commit-Queue: Matt Stark <msta@google.com>

src/gn/starlark/crates/loader/src/loader.rs

diff --git a/src/gn/starlark/crates/loader/src/loader.rs b/src/gn/starlark/crates/loader/src/loader.rs
index 516f02c..938516c 100644
--- a/src/gn/starlark/crates/loader/src/loader.rs
+++ b/src/gn/starlark/crates/loader/src/loader.rs
@@ -275,7 +275,7 @@
     #[test]
     fn test_simple_load() {
         let loader = FileLoader::default();
-        let module = load(&loader, "//load:absolute.bzl").unwrap();
+        let module = load(&loader, "//load:absolute.scl").unwrap();
         assert_eq!(
             module.get("absolute").unwrap().unpack_str(),
             Some("absolute")
@@ -285,7 +285,7 @@
     #[test]
     fn test_transitive_load() {
         let loader = FileLoader::default();
-        let module = load(&loader, "//load:root.bzl").unwrap();
+        let module = load(&loader, "//load:root.scl").unwrap();
         assert_eq!(
             module.get("absolute_value").unwrap().unpack_str(),
             Some("absolute")
@@ -315,8 +315,8 @@
     #[test]
     fn test_load_error_caching() {
         let loader = FileLoader::default();
-        let first_err = load(&loader, "//load:does_not_exist.bzl").unwrap_err();
-        let second_err = load(&loader, "//load:does_not_exist.bzl").unwrap_err();
+        let first_err = load(&loader, "//load:does_not_exist.scl").unwrap_err();
+        let second_err = load(&loader, "//load:does_not_exist.scl").unwrap_err();
 
         assert!(first_err.to_string().contains("Failed to read"));
         assert!(second_err.to_string().contains("Failed to read"));

src/gn/starlark/src/testdata/load/absolute.scl

diff --git a/src/gn/starlark/src/testdata/load/absolute.bzl b/src/gn/starlark/src/testdata/load/absolute.scl
similarity index 100%
rename from src/gn/starlark/src/testdata/load/absolute.bzl
rename to src/gn/starlark/src/testdata/load/absolute.scl

src/gn/starlark/src/testdata/load/relative.scl

diff --git a/src/gn/starlark/src/testdata/load/relative.bzl b/src/gn/starlark/src/testdata/load/relative.scl
similarity index 100%
rename from src/gn/starlark/src/testdata/load/relative.bzl
rename to src/gn/starlark/src/testdata/load/relative.scl

src/gn/starlark/src/testdata/load/root.bzl

diff --git a/src/gn/starlark/src/testdata/load/root.bzl b/src/gn/starlark/src/testdata/load/root.bzl
deleted file mode 100644
index c11f8f1..0000000
--- a/src/gn/starlark/src/testdata/load/root.bzl
+++ /dev/null
@@ -1,7 +0,0 @@
-load(":relative.bzl", "relative")
-load("//load:absolute.bzl", "absolute")
-load("//load:relative.bzl", relative_as_absolute = "relative")
-
-absolute_value = absolute
-relative_value = relative
-relative_as_absolute_value = relative_as_absolute

src/gn/starlark/src/testdata/load/root.scl

diff --git a/src/gn/starlark/src/testdata/load/root.scl b/src/gn/starlark/src/testdata/load/root.scl
new file mode 100644
index 0000000..37eaac2
--- /dev/null
+++ b/src/gn/starlark/src/testdata/load/root.scl
@@ -0,0 +1,7 @@
+load(":relative.scl", "relative")
+load("//load:absolute.scl", "absolute")
+load("//load:relative.scl", relative_as_absolute = "relative")
+
+absolute_value = absolute
+relative_value = relative
+relative_as_absolute_value = relative_as_absolute