dart2js cps: Status updates and minor fixes for host checked mode.

pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.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 dart2js.ir_builder_task;
 
 import '../closure.dart' as closurelib;
 import '../closure.dart' hide ClosureScope;
 import '../common/names.dart' show
     Names,
@@ skipping 2047 matching lines @@
     return buildInstanceNoSuchMethod(
         elements.getSelector(node), elements.getTypeMask(node), []);
   }
 
   @override
   ir.Primitive bulkHandleNode(ast.Node node, String message, _) {
     return giveup(node, "Unhandled node: ${message.replaceAll('#', '$node')}");
   }
 
   @override
-  ir.Primitive bulkHandleError(ast.Send node, ErroneousElement error, _) {
-    assert(compiler.compilationFailed);
+  ir.Primitive bulkHandleError(ast.Node node, ErroneousElement error, _) {
     return irBuilder.buildNullConstant();
   }
 
   @override
   ir.Primitive visitClassTypeLiteralSet(
       ast.SendSet node,
       TypeConstantExpression constant,
       ast.Node rhs, _) {
     InterfaceType type = constant.type;
     ClassElement element = type.element;
@@ skipping 1496 matching lines @@
     if (compiler.backend.isForeign(function)) {
       return handleForeignCode(node, function, argumentList, callStructure);
     } else {
       return irBuilder.buildStaticFunctionInvocation(function, callStructure,
           translateStaticArguments(argumentList, function, callStructure),
           sourceInformation:
               sourceInformationBuilder.buildCall(node, node.selector));
     }
   }
 }