Pepper: More IDL generator cleanup.

This change makes running the test for idl_c_proto work again, by fixing the
test.

It also removes an unused "BuiltIn" type list in idl_ast, which was very
confusing, and performs some other small cleanup I came across while adding
support for dev channel versions.

BUG=

Review URL: https://codereview.chromium.org/98343005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238711 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/ppapi/generators/idl_tests.py b/ppapi/generators/idl_tests.py
index cfc9fe8..bf6d8a1 100755
--- a/ppapi/generators/idl_tests.py
+++ b/ppapi/generators/idl_tests.py
@@ -30,6 +30,10 @@
   assert errors == 0
   errors += TestIDL('idl_gen_pnacl.py', ['--wnone', '--test'])
   assert errors == 0
+  errors += TestIDL('idl_namespace.py', [])
+  assert errors == 0
+  errors += TestIDL('idl_node.py', [])
+  assert errors == 0
 
   if errors:
     print '\nFailed tests.'