Work on blink GN bindings

Source/bindings/scripts/scripts.gyp

Index: Source/bindings/scripts/scripts.gyp
diff --git a/Source/bindings/scripts/scripts.gyp b/Source/bindings/scripts/scripts.gyp
index 5a56dbba350bed853b8df32fe57ff4061caa0ba1..d8d8687171305908ed0762ec6931d35c70778e7b 100644
--- a/Source/bindings/scripts/scripts.gyp
+++ b/Source/bindings/scripts/scripts.gyp
@@ -21,6 +21,8 @@
     # However, pre-caching ensures that all compiler processes use the cached
     # files (hence maximizing speed), instead of early processes building the
     # tables themselves (as they've not yet been written when they start).
+    #
+    # GN version: //third_party/WebKit/Source/bindings/scripts:cached_lex_yacc_tables
     'target_name': 'cached_lex_yacc_tables',
     'type': 'none',
     'actions': [{
@@ -45,6 +47,8 @@
     # A separate pre-caching step is *required* to use bytecode caching in
     # Jinja (which improves speed significantly), as the bytecode cache is
     # not concurrency-safe on write; details in code_generator_v8.py.
+    #
+    # GN version: //third_party/WebKit/Source/bindings/scripts:cached_jinja_templates
     'target_name': 'cached_jinja_templates',
     'type': 'none',
     'actions': [{