Handle dart:html in kernel_impact

pkg/compiler/lib/src/resolution/variables.dart

 // Copyright (c) 2015, 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 dart2js.resolution.variables;
 
 import '../common.dart';
 import '../common/resolution.dart';
 import '../elements/modelx.dart' show LocalVariableElementX, VariableList;
 import '../tree/tree.dart';
@@ skipping 24 matching lines @@
         new VariableDefinitionScope(resolver.scope, name);
     resolver.visitIn(node.arguments.head, scope);
     if (scope.variableReferencedInInitializer) {
       reporter.reportErrorMessage(identifier,
           MessageKind.REFERENCE_IN_INITIALIZATION, {'variableName': name});
     }
     return identifier;
   }
 
   Identifier visitIdentifier(Identifier node) {
-    // The variable is initialized to null.
-    registry.registerFeature(Feature.LOCAL_WITHOUT_INITIALIZER);
+    if (!resolver.inCatchParameters) {
+      // The variable is initialized to null.
+      registry.registerFeature(Feature.LOCAL_WITHOUT_INITIALIZER);
+    }
     if (definitions.modifiers.isConst) {
       if (resolver.inLoopVariable) {
         reporter.reportErrorMessage(node, MessageKind.CONST_LOOP_VARIABLE);
       } else {
         reporter.reportErrorMessage(
             node, MessageKind.CONST_WITHOUT_INITIALIZER);
       }
     }
     if (definitions.modifiers.isFinal && !resolver.inLoopVariable) {
       reporter.reportErrorMessage(node, MessageKind.FINAL_WITHOUT_INITIALIZER);
@@ skipping 10 matching lines @@
       resolver.addToScope(element);
       if (definitions.modifiers.isConst) {
         addDeferredAction(element, () {
           element.constant =
               resolution.resolver.constantCompiler.compileConstant(element);
         });
       }
     }
   }
 }