Move IS_INDEXABLE_FIELD to JsGetName.

sdk/lib/_internal/compiler/js_lib/js_helper.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library _js_helper;
 
 import 'dart:_async_await_error_codes' as async_error_codes;
 
 import 'dart:_js_embedded_names' show
     DEFERRED_LIBRARY_URIS,
@@ skipping 30 matching lines @@
 import 'dart:_foreign_helper' show
     DART_CLOSURE_TO_JS,
     JS,
     JS_BUILTIN,
     JS_CALL_IN_ISOLATE,
     JS_CONST,
     JS_CURRENT_ISOLATE,
     JS_CURRENT_ISOLATE_CONTEXT,
     JS_EFFECT,
     JS_EMBEDDED_GLOBAL,
-    JS_FUNCTION_TYPE_NAMED_PARAMETERS_TAG,
-    JS_FUNCTION_TYPE_OPTIONAL_PARAMETERS_TAG,
-    JS_FUNCTION_TYPE_REQUIRED_PARAMETERS_TAG,
-    JS_FUNCTION_TYPE_RETURN_TYPE_TAG,
-    JS_FUNCTION_TYPE_VOID_RETURN_TAG,
     JS_GET_FLAG,
     JS_GET_NAME,
     JS_HAS_EQUALS,
-    JS_IS_INDEXABLE_FIELD_NAME,
-    JS_OPERATOR_AS_PREFIX,
-    JS_SIGNATURE_NAME,
     JS_STRING_CONCAT,
     RAW_DART_FUNCTION_REF;
 
 import 'dart:_interceptors';
 import 'dart:_internal' as _symbol_dev;
 import 'dart:_internal' show EfficientLength, MappedIterable;
 
 import 'dart:_native_typed_data';
 
 import 'dart:_js_names' show
@@ skipping 4024 matching lines @@
   // This is a function that will return a helper function that does the
   // iteration of the sync*.
   //
   // Each invocation should give a body with fresh state.
   final dynamic /* js function */ _outerHelper;
 
   SyncStarIterable(this._outerHelper);
 
   Iterator get iterator => new SyncStarIterator(JS('', '#()', _outerHelper));
 }