Add support for type checking of floating point attributes

Source/bindings/scripts/v8_attributes.py

Index: Source/bindings/scripts/v8_attributes.py
diff --git a/Source/bindings/scripts/v8_attributes.py b/Source/bindings/scripts/v8_attributes.py
index 6869958a6763465f4531a1671bf271a41843935c..446c426a8411a3f9ef0cb0c24941e58fc2567991 100644
--- a/Source/bindings/scripts/v8_attributes.py
+++ b/Source/bindings/scripts/v8_attributes.py
@@ -76,6 +76,10 @@ def generate_attribute(interface, attribute):
         (has_extended_attribute_value(interface, 'TypeChecking', 'Nullable') or
          has_extended_attribute_value(attribute, 'TypeChecking', 'Nullable')) and
          idl_type.is_wrapper_type)
+    has_type_checking_unrestricted = (
+        (has_extended_attribute_value(interface, 'TypeChecking', 'Unrestricted') or
+         has_extended_attribute_value(attribute, 'TypeChecking', 'Unrestricted')) and
+         idl_type.name in ('Float', 'Double'))
 
     if (base_idl_type == 'EventHandler' and
         interface.name in ['Window', 'WorkerGlobalScope'] and
@@ -96,17 +100,22 @@ def generate_attribute(interface, attribute):
         'enum_validation_expression': idl_type.enum_validation_expression,
         'has_custom_getter': has_custom_getter,
         'has_custom_setter': has_custom_setter,
+        'has_setter_exception_state':
+            is_setter_raises_exception or has_type_checking_interface or
+            has_type_checking_nullable or has_type_checking_unrestricted or
+            idl_type.is_integer_type,
         'has_type_checking_interface': has_type_checking_interface,
         'has_type_checking_nullable': has_type_checking_nullable,
+        'has_type_checking_unrestricted': has_type_checking_unrestricted,
         'idl_type': str(idl_type),  # need trailing [] on array for Dictionary::ConversionContext::setConversionType
         'is_call_with_execution_context': v8_utilities.has_extended_attribute_value(attribute, 'CallWith', 'ExecutionContext'),
         'is_call_with_script_state': v8_utilities.has_extended_attribute_value(attribute, 'CallWith', 'ScriptState'),
         'is_check_security_for_node': is_check_security_for_node,
         'is_custom_element_callbacks': is_custom_element_callbacks,
         'is_expose_js_accessors': 'ExposeJSAccessors' in extended_attributes,
-        'is_getter_raises_exception': (  # [RaisesException]
+        'is_getter_raises_exception':  # [RaisesException]
             'RaisesException' in extended_attributes and
-            extended_attributes['RaisesException'] in [None, 'Getter']),
+            extended_attributes['RaisesException'] in (None, 'Getter'),
         'is_initialized_by_event_constructor':
             'InitializedByEventConstructor' in extended_attributes,
         'is_keep_alive_for_gc': is_keep_alive_for_gc(interface, attribute),
@@ -119,9 +128,6 @@ def generate_attribute(interface, attribute):
         'is_replaceable': 'Replaceable' in attribute.extended_attributes,
         'is_setter_call_with_execution_context': v8_utilities.has_extended_attribute_value(attribute, 'SetterCallWith', 'ExecutionContext'),
         'is_setter_raises_exception': is_setter_raises_exception,
-        'has_setter_exception_state': (
-            is_setter_raises_exception or has_type_checking_interface or
-            has_type_checking_nullable or idl_type.is_integer_type),
         'is_static': attribute.is_static,
         'is_url': 'URL' in extended_attributes,
         'is_unforgeable': 'Unforgeable' in extended_attributes,