PPAPI: Make "no_interface_string" APIs have no PNaCl wrapper

ppapi/generators/idl_gen_pnacl.py

Index: ppapi/generators/idl_gen_pnacl.py
diff --git a/ppapi/generators/idl_gen_pnacl.py b/ppapi/generators/idl_gen_pnacl.py
index a101341861d9cc2fbf4d0c0c47674538d12fd80a..dd1ce0cd9eb7ef909e70882be4f2e5ad7a2a3165 100755
--- a/ppapi/generators/idl_gen_pnacl.py
+++ b/ppapi/generators/idl_gen_pnacl.py
@@ -59,6 +59,12 @@ class PnaclGen(WrapperGen):
       return True
     if iface.GetName().endswith('Trusted'):
       return False
+    # TODO(dmichael): We have no way to wrap PPP_ interfaces without an
+    # interface string. If any ever need wrapping, we'll need to figure out a
+    # way to get the plugin-side of the Pepper proxy (within the IRT) to access
+    # and use the wrapper.
+    if iface.GetProperty("no_interface_string"):
+      return False
     for member in iface.GetListOf('Member'):
       release = member.GetRelease(version)
       if self.MemberNeedsWrapping(member, release):