dart2js cps: Set the return type on adapters.

pkg/compiler/lib/src/cps_ir/inline.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 cps_ir.optimization.inline;
 
 import 'cps_fragment.dart';
 import 'cps_ir_builder.dart' show ThisParameterLocal;
 import 'cps_ir_nodes.dart';
 import 'optimizers.dart';
@@ skipping 356 matching lines @@
       });
       newCallStructure = new CallStructure(signature.parameterCount);
     }
 
     Selector newSelector =
         new Selector(node.selector.kind, node.selector.memberName,
             newCallStructure);
     Primitive result = cps.invokeMethod(thisParameter, newSelector, node.mask,
         arguments, node.callingConvention);
     result.type = typeSystem.getInvokeReturnType(node.selector, node.mask);
+    returnContinuation.parameters.single.type = result.type;
     cps.invokeContinuation(returnContinuation, <Primitive>[result]);
     return new FunctionDefinition(target, thisParameter, parameters,
         returnContinuation,
         cps.root);
   }
 
   // Given an invocation and a known target, possibly perform inlining.
   //
   // An optional call structure indicates a dynamic call.  Calls that are
   // already resolved statically have a null call structure.
@@ skipping 205 matching lines @@
     if (target.isOperator &&
         (enclosingClass == backend.helpers.jsNumberClass ||
          enclosingClass == backend.helpers.jsDoubleClass ||
          enclosingClass == backend.helpers.jsIntClass)) {
       // These should be handled by operator specialization.
       return true;
     }
     return false;
   }
 }