Extract DiagnosticReporter implementation from Compiler.

pkg/compiler/lib/src/mirrors/dart2js_instance_mirrors.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.
 
 part of dart2js.mirrors;
 
 abstract class ObjectMirrorMixin implements ObjectMirror {
   InstanceMirror getField(Symbol fieldName) {
     throw new UnsupportedError('ObjectMirror.getField unsupported.');
   }
@@ skipping 38 matching lines @@
     return new Dart2JsMapConstantMirror(mirrorSystem, constant, value);
   } else if (value.isType) {
     return new Dart2JsTypeConstantMirror(mirrorSystem, constant, value);
   } else if (value.isFunction) {
     return new Dart2JsConstantMirror(mirrorSystem, constant, value);
   } else if (value.isNull) {
     return new Dart2JsNullConstantMirror(mirrorSystem, constant, value);
   } else if (value.isConstructedObject) {
     return new Dart2JsConstructedConstantMirror(mirrorSystem, constant, value);
   }
-  mirrorSystem.compiler.internalError(NO_LOCATION_SPANNABLE,
+  mirrorSystem.compiler.reporter.internalError(NO_LOCATION_SPANNABLE,
       "Unexpected constant value $value");
   return null;
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////
 // Mirrors on constant values used for metadata.
 ////////////////////////////////////////////////////////////////////////////////
 
 class Dart2JsConstantMirror extends Object
@@ skipping 219 matching lines @@
       return new Dart2JsBoolConstantMirror.fromBool(mirrorSystem, isDocComment);
     } else if (fieldName == #text) {
       return new Dart2JsStringConstantMirror.fromString(mirrorSystem, text);
     } else if (fieldName == #trimmedText) {
       return new Dart2JsStringConstantMirror.fromString(mirrorSystem,
                                                         trimmedText);
     }
     return super.getField(fieldName);
   }
 }