Fix the build with WEB_AUDIO disabled.

tools/dom/scripts/dartdomgenerator.py

 #!/usr/bin/python
 # Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 """This is the entry point to create Dart APIs from the IDL database."""
 
 import dartgenerator
 import database
 import fremontcutbuilder
 import logging.config
 import monitored
 import multiemitter
 import optparse
 import os
 import shutil
 import subprocess
 import sys
 from generator import TypeRegistry
 from htmleventgenerator import HtmlEventGenerator
 from htmlrenamer import HtmlRenamer
 from systemhtml import DartLibraryEmitter, Dart2JSBackend,\
-                       HtmlDartInterfaceGenerator, DartLibrary, DartLibraries
+                       HtmlDartInterfaceGenerator, DartLibrary, DartLibraries,\
+                       HTML_LIBRARY_NAMES
 from systemnative import CPPLibraryEmitter, DartiumBackend
 from templateloader import TemplateLoader
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..'))
 import utils
 
 _logger = logging.getLogger('dartdomgenerator')
 
-_libraries = ['chrome', 'html', 'indexed_db', 'svg', 'web_audio', 'web_gl',
-    'web_sql']
-
 class GeneratorOptions(object):
   def __init__(self, templates, database, type_registry, renamer):
     self.templates = templates
     self.database = database
     self.type_registry = type_registry
     self.renamer = renamer
 
 def LoadDatabase(database_dir, use_database_cache):
   common_database = database.Database(database_dir)
   if use_database_cache:
@@ skipping 50 matching lines @@
     template_loader = TemplateLoader(template_dir,
                                      template_paths,
                                      {'DARTIUM': False, 'DART2JS': True})
     backend_options = GeneratorOptions(
         template_loader, webkit_database, type_registry, renamer)
     backend_factory = lambda interface:\
         Dart2JSBackend(interface, backend_options)
 
     dart_output_dir = os.path.join(dart2js_output_dir, 'dart')
     dart_libraries = DartLibraries(
-        _libraries, template_loader, 'dart2js', dart2js_output_dir)
+        HTML_LIBRARY_NAMES, template_loader, 'dart2js', dart2js_output_dir)
 
     RunGenerator(dart_libraries, dart_output_dir,
         template_loader, backend_factory)
 
   if dartium_output_dir:
     template_paths = ['html/dartium', 'html/impl', 'html/interface', '']
     template_loader = TemplateLoader(template_dir,
                                      template_paths,
                                      {'DARTIUM': True, 'DART2JS': False})
     backend_options = GeneratorOptions(
         template_loader, webkit_database, type_registry, renamer)
     cpp_output_dir = os.path.join(dartium_output_dir, 'cpp')
     cpp_library_emitter = CPPLibraryEmitter(emitters, cpp_output_dir)
     backend_factory = lambda interface:\
         DartiumBackend(interface, cpp_library_emitter, backend_options)
 
     dart_output_dir = os.path.join(dartium_output_dir, 'dart')
     dart_libraries = DartLibraries(
-        _libraries, template_loader, 'dartium', dartium_output_dir)
+        HTML_LIBRARY_NAMES, template_loader, 'dartium', dartium_output_dir)
 
     RunGenerator(dart_libraries, dart_output_dir,
                  template_loader, backend_factory)
     cpp_library_emitter.EmitDerivedSources(
         template_loader.Load('cpp_derived_sources.template'),
         dartium_output_dir)
     cpp_library_emitter.EmitResolver(
         template_loader.Load('cpp_resolver.template'), dartium_output_dir)
 
   _logger.info('Flush...')
@@ skipping 53 matching lines @@
   if options.rebuild:
     # Parse the IDL and create the database.
     database = fremontcutbuilder.main(options.parallel)
   else:
     # Load the previously generated database.
     database = LoadDatabase(database_dir, options.use_database_cache)
   GenerateFromDatabase(database, dart2js_output_dir, dartium_output_dir)
 
   if 'htmldart2js' in systems:
     _logger.info('Generating dart2js single files.')
-    for library_name in _libraries:
+    for library_name in HTML_LIBRARY_NAMES:
       GenerateSingleFile(
           os.path.join(dart2js_output_dir, '%s_dart2js.dart' % library_name),
           os.path.join('..', '..', '..', 'sdk', 'lib', library_name, 'dart2js'))
   if 'htmldartium' in systems:
     _logger.info('Generating dartium single files.')
-    for library_name in _libraries:
+    for library_name in HTML_LIBRARY_NAMES:
       GenerateSingleFile(
           os.path.join(dartium_output_dir, '%s_dartium.dart' % library_name),
           os.path.join('..', '..', '..', 'sdk', 'lib', library_name, 'dartium'))
 
 if __name__ == '__main__':
   sys.exit(main())