[Bindings] Refactoring of binding code around runtime enabled features

third_party/WebKit/Source/bindings/templates/constants.cpp.tmpl

 {##############################################################################}
 {% macro constant_getter_callback(constant) %}
 void {{constant.name}}ConstantGetterCallback(v8::Local<v8::Name>, const v8::PropertyCallbackInfo<v8::Value>& info) {
   {% if constant.deprecate_as %}
   Deprecation::countDeprecation(currentExecutionContext(info.GetIsolate()), UseCounter::{{constant.deprecate_as}});
   {% endif %}
   {% if constant.measure_as %}
   UseCounter::count(currentExecutionContext(info.GetIsolate()), UseCounter::{{constant.measure_as('ConstantGetter')}});
   {% endif %}
   {% if constant.idl_type in ('Double', 'Float') %}
@@ skipping 12 matching lines @@
 {% if constants | has_constant_configuration %}
 {# Normal constants #}
 const V8DOMConfiguration::ConstantConfiguration {{v8_class}}Constants[] = {
     {% for constant in constants | has_constant_configuration %}
     {{constant_configuration(constant)}},
     {% endfor %}
 };
 V8DOMConfiguration::installConstants(isolate, interfaceTemplate, prototypeTemplate, {{v8_class}}Constants, WTF_ARRAY_LENGTH({{v8_class}}Constants));
 {% endif %}
 {# Runtime-enabled constants #}
-{% for group in constants | runtime_enabled_constants | groupby('runtime_feature_name') %}
-{% filter runtime_enabled(group.list[0].runtime_enabled_function) %}
+{% for group in constants | runtime_enabled_constants | groupby('runtime_enabled_feature_name') %}
+{% filter runtime_enabled(group.list[0].runtime_enabled_feature_name) %}
 {% for constant in group.list %}
 {% set constant_name = constant.name.title().replace('_', '') %}
 const V8DOMConfiguration::ConstantConfiguration constant{{constant_name}}Configuration = {{constant_configuration(constant)}};
 V8DOMConfiguration::installConstant(isolate, interfaceTemplate, prototypeTemplate, constant{{constant_name}}Configuration);
 {% endfor %}
 {% endfilter %}
 {% endfor %}
 {# Constants with [DeprecateAs] or [MeasureAs] #}
 {% for constant in constants | has_special_getter %}
 V8DOMConfiguration::installConstantWithGetter(isolate, interfaceTemplate, prototypeTemplate, "{{constant.name}}", {{cpp_class}}V8Internal::{{constant.name}}ConstantGetterCallback);
@@ skipping 13 matching lines @@
 {######################################}
 {%- macro constant_configuration(constant) %}
 {% if constant.idl_type in ('Double', 'Float') %}
     {% set value = '0, %s' % constant.value %}
 {% else %}
     {# 'Short', 'Long' etc. #}
     {% set value = '%s, 0' % constant.value %}
 {% endif %}
 {"{{constant.name}}", {{value}}, V8DOMConfiguration::ConstantType{{constant.idl_type}}}
 {%- endmacro %}