dart2js: Optimize Function.apply for 0-3 argument calls.

pkg/compiler/lib/src/js_backend/namer.dart

 // Copyright (c) 2011, 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.
 
 part of js_backend;
 
 /**
  * Assigns JavaScript identifiers to Dart variables, class-names and members.
  *
  * Names are generated through three stages:
@@ skipping 399 matching lines @@
   String get closureInvocationSelectorName => Compiler.CALL_OPERATOR_NAME;
   bool get shouldMinify => false;
 
   /// Returns the string that is to be used as the result of a call to
   /// [JS_GET_NAME] at [node] with argument [name].
   String getNameForJsGetName(Node node, JsGetName name) {
     switch (name) {
       case JsGetName.GETTER_PREFIX: return getterPrefix;
       case JsGetName.SETTER_PREFIX: return setterPrefix;
       case JsGetName.CALL_PREFIX: return callPrefix;
+      case JsGetName.CALL_PREFIX0: return '${callPrefix}\$0';
+      case JsGetName.CALL_PREFIX1: return '${callPrefix}\$1';
+      case JsGetName.CALL_PREFIX2: return '${callPrefix}\$2';
+      case JsGetName.CALL_PREFIX3: return '${callPrefix}\$3';
       case JsGetName.CALL_CATCH_ALL: return callCatchAllName;
       case JsGetName.REFLECTABLE: return reflectableField;
       case JsGetName.CLASS_DESCRIPTOR_PROPERTY:
         return classDescriptorProperty;
       case JsGetName.REQUIRED_PARAMETER_PROPERTY:
         return requiredParameterField;
       case JsGetName.DEFAULT_VALUES_PROPERTY: return defaultValuesField;
       case JsGetName.CALL_NAME_PROPERTY: return callNameField;
       default:
         compiler.reportError(
@@ skipping 1337 matching lines @@
         if (!first) {
           sb.write('_');
         }
         sb.write('_');
         visit(parameter);
         first = true;
       }
     }
   }
 }