Fix for typo

compiler/java/com/google/dart/compiler/resolver/ResolverErrorCode.java

 // Copyright (c) 2012, 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.
 package com.google.dart.compiler.resolver;
 
 import com.google.dart.compiler.ErrorCode;
 import com.google.dart.compiler.ErrorSeverity;
 import com.google.dart.compiler.SubSystem;
 
 /**
  * {@link ErrorCode}s for resolver.
  */
 public enum ResolverErrorCode implements ErrorCode {
   BLACK_LISTED_EXTENDS("'%s' can not be used as superclass"),
   BLACK_LISTED_IMPLEMENTS("'%s' can not be used as superinterface"),
   BREAK_LABEL_RESOLVES_TO_CASE_OR_DEFAULT("break label resolves to case or default statement"),
-  BUILT_IN_IDENTIFIER_AS_IMPORT_PREFIX("Build-in identifier '%s' cannot be used as a import prefix"),
-  BUILT_IN_IDENTIFIER_AS_TYPE("Build-in identifier '%s' cannot be used as a type annotation"),
+  BUILT_IN_IDENTIFIER_AS_IMPORT_PREFIX("Built-in identifier '%s' cannot be used as a import prefix"),
+  BUILT_IN_IDENTIFIER_AS_TYPE("Built-in identifier '%s' cannot be used as a type annotation"),
   CANNOT_ACCESS_FIELD_IN_INIT("Cannot access an instance field in an initializer expression"),
   CANNOT_ACCESS_METHOD(ErrorSeverity.WARNING, "Cannot access private method '%s'"),
   CANNOT_ACCESS_OUTER_LABEL("Cannot access label %s declared in an outer function"),
   CANNOT_ASSIGN_TO_FINAL("cannot assign value to final variable \"%s\"."),
   CANNOT_ASSIGN_TO_METHOD("cannot assign value to method '%s'."),
   CANNOT_BE_RESOLVED("cannot resolve %s"),
   // TODO(zundel): error message needs JUnit test - how to test #imports in junit?
   CANNOT_BE_RESOLVED_LIBRARY("cannot resolve %s in library %s"),
   CANNOT_CALL_FUNCTION_TYPE_ALIAS("Function type aliases cannot be called"),
   // TODO(zundel): error message needs JUnit test - how to test #imports in junit?
@@ skipping 205 matching lines @@
   @Override
   public SubSystem getSubSystem() {
     return SubSystem.RESOLVER;
   }
 
   @Override
   public boolean needsRecompilation() {
     return true;
   }
 }