Revert "Conversions between Dart code and DOM code."

lib/dom/scripts/generator.py

Index: lib/dom/scripts/generator.py
diff --git a/lib/dom/scripts/generator.py b/lib/dom/scripts/generator.py
index 522c54080ec64953c0da460eb1f2aadbc8e255ca..04b88a7181dbac9195847b8381051d33049dcdd4 100644
--- a/lib/dom/scripts/generator.py
+++ b/lib/dom/scripts/generator.py
@@ -169,9 +169,6 @@ class ParamInfo(object):
     self.dart_type = dart_type
     self.is_optional = is_optional
 
-  def Copy(self):
-    return ParamInfo(self.name, self.type_id, self.dart_type, self.is_optional)
-
   def __repr__(self):
     content = 'name = %s, type_id = %s, dart_type = %s, is_optional = %s' % (
         self.name, self.type_id, self.dart_type, self.is_optional)
@@ -416,15 +413,6 @@ class OperationInfo(object):
     else:
       return self.type_name
 
-  def CopyAndWidenDefaultParameters(self):
-    """Returns equivalent OperationInfo, but default parameters are Dynamic."""
-    info = copy.copy(self)
-    info.param_infos = [param.Copy() for param in self.param_infos]
-    for param in info.param_infos:
-      if param.is_optional:
-        param.dart_type = 'Dynamic'
-    return info
-
 
 def ConstantOutputOrder(a, b):
   """Canonical output ordering for constants."""
@@ -461,61 +449,6 @@ def TypeName(type_ids, interface):
 
 # ------------------------------------------------------------------------------
 
-class Conversion(object):
-  """Represents a way of converting between types."""
-  def __init__(self, name, input_type, output_type):
-    # input_type is the type of the API input (and the argument type of the
-    # conversion function)
-    # output_type is the type of the API output (and the result type of the
-    # conversion function)
-    self.function_name = name
-    self.input_type = input_type
-    self.output_type = output_type
-
-#  TYPE -> "DIRECTION INTERFACE.MEMBER" -> conversion
-#  TYPE -> "DIRECTION INTERFACE.*" -> conversion
-#  TYPE -> "DIRECTION" -> conversion
-#
-# where DIRECTION is 'get' for getters and operation return values, 'set' for
-# setters and operation arguments.  INTERFACE and MEMBER are the idl names.
-#
-dart2js_conversions = {
-    'IDBKey': {
-        'get':
-          Conversion('_convertNativeToDart_IDBKey', 'Dynamic', 'Dynamic'),
-        'set':
-          Conversion('_convertDartToNative_IDBKey', 'Dynamic', 'Dynamic'),
-        },
-    'ImageData': {
-        'get':
-          Conversion('_convertNativeToDart_ImageData', 'Dynamic', 'ImageData'),
-        'set':
-          Conversion('_convertDartToNative_ImageData', 'ImageData', 'Dynamic')
-        },
-    'Dictionary': {
-        'get':
-          Conversion('_convertNativeToDart_Dictionary', 'Dynamic', 'Map'),
-        'set':
-          Conversion('_convertDartToNative_Dictionary', 'Map', 'Dynamic'),
-        },
-
-    'DOMString[]': {
-        'set':
-          Conversion(
-              '_convertDartToNative_StringArray', 'List<String>', 'List'),
-        },
-}
-
-def FindConversion(idl_type, direction, interface, member):
-  table = dart2js_conversions.get(idl_type)
-  if table:
-    return (table.get('%s %s.%s' % (direction, interface, member)) or
-            table.get('%s %s.*' % (direction, interface)) or
-            table.get(direction))
-  return None
-
-# ------------------------------------------------------------------------------
-
 class IDLTypeInfo(object):
   def __init__(self, idl_type, data):
     self._idl_type = idl_type