Merge BaseGenerator into HtmlDartInterfaceGenerator.

lib/html/scripts/dartdomgenerator.py

Index: lib/html/scripts/dartdomgenerator.py
diff --git a/lib/html/scripts/dartdomgenerator.py b/lib/html/scripts/dartdomgenerator.py
index f27d66697f658e8be527db7faa47586dbaa6f833..46ae9bae32e49961bacc0e0da373c7a7cdb4b0f6 100755
--- a/lib/html/scripts/dartdomgenerator.py
+++ b/lib/html/scripts/dartdomgenerator.py
@@ -18,7 +18,6 @@ import sys
 from generator import TypeRegistry
 from htmleventgenerator import HtmlEventGenerator
 from htmlrenamer import HtmlRenamer
-from systembase import GeneratorOptions
 from systemhtml import DartLibraryEmitter, Dart2JSBackend,\
                        HtmlDartInterfaceGenerator
 from systemnative import CPPLibraryEmitter, DartiumBackend
@@ -38,6 +37,13 @@ _webkit_renames = {
     'Window': 'DOMWindow',
     'WorkerGlobalScope': 'WorkerContext'}
 
+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
+
 # TODO(vsm): Remove once we fix Dartium to pass in the database directly.
 def Generate(database_dir, use_database_cache, dart2js_output_dir=None,
              dartium_output_dir=None):