Use an enum in embedded_names as input to JS_GET_NAME.

sdk/lib/_internal/compiler/js_lib/shared/embedded_names.dart

Index: sdk/lib/_internal/compiler/js_lib/shared/embedded_names.dart
diff --git a/sdk/lib/_internal/compiler/js_lib/shared/embedded_names.dart b/sdk/lib/_internal/compiler/js_lib/shared/embedded_names.dart
index 2735d3855be686adc0e5a84f31f6c80c0f189498..9de6495f7c01ea32bd569022462e673bff54be24 100644
--- a/sdk/lib/_internal/compiler/js_lib/shared/embedded_names.dart
+++ b/sdk/lib/_internal/compiler/js_lib/shared/embedded_names.dart
@@ -58,11 +58,24 @@ const INITIALIZE_EMPTY_INSTANCE = "initializeEmptyInstance";
 const TYPEDEF_TYPE_PROPERTY_NAME = r"$typedefType";
 const TYPEDEF_PREDICATE_PROPERTY_NAME = r"$$isTypedef";
 const NATIVE_SUPERCLASS_TAG_NAME = r"$nativeSuperclassTag";
-const ARGUMENT_COUNT_PROPERTY = r"$argumentCount";
-const DEFAULT_VALUES_PROPERTY = r"$defaultValues";
 
 /// Returns the type given the name of a class.
 /// This function is called by the runtime when computing rti.
 const GET_TYPE_FROM_NAME = 'getTypeFromName';
 const TYPE_TO_INTERCEPTOR_MAP = "typeToInterceptorMap";
 
+/// Names that are supported by [JS_GET_NAME].
+// TODO(herhut): Make entries lower case (as in fields) and find a better name.
+enum JsGetName {
+  GETTER_PREFIX,
+  SETTER_PREFIX,
+  CALL_PREFIX,
+  CALL_CATCH_ALL,
+  REFLECTABLE,
+  CLASS_DESCRIPTOR_PROPERTY,
+  REQUIRED_PARAMETER_PROPERTY,
+  DEFAULT_VALUES_PROPERTY,
+  CALL_NAME_PROPERTY
+}
+
+