PPAPI: Make generator support "no_interface_string"

ppapi/generators/idl_gen_wrapper.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Base class for generating wrapper functions for PPAPI methods.
 """
 
 from datetime import datetime
 import os
 import sys
@@ skipping 331 matching lines @@
       out.Write('  ' + ',\n  '.join(methods) + '\n')
       out.Write('};\n\n')
 
 
   def GetWrapperInfoName(self, iface):
     return '%s_WrapperInfo_%s' % (self.wrapper_prefix, iface.struct_name)
 
 
   def GenerateWrapperInfoAndCollection(self, iface_releases, out):
     for iface in iface_releases:
-      iface_macro = self.cgen.GetInterfaceMacro(iface.node, iface.version)
+      iface_macro = "NULL"
+      if not iface.node.GetProperty("no_interface_string"):
+        iface_macro = self.cgen.GetInterfaceMacro(iface.node, iface.version)
       if iface.needs_wrapping:
         wrap_iface = '(const void *) &%s_Wrappers_%s' % (self.wrapper_prefix,
                                                          iface.struct_name)
         out.Write("""static struct %s %s = {
   .iface_macro = %s,
   .wrapped_iface = %s,
   .real_iface = NULL
 };\n\n""" % (self.GetWrapperMetadataName(),
              self.GetWrapperInfoName(iface),
              iface_macro,
@@ skipping 66 matching lines @@
     self.GenerateWrapperInterfaces(iface_releases, out)
 
     # Generate a table of the wrapped interface structs that can be looked up.
     self.GenerateWrapperInfoAndCollection(iface_releases, out)
 
     # Write out the IDL-invariant functions.
     self.GenerateFixedFunctions(out)
 
     out.Close()
     return 0