Take noSuchMethod into account when computing the potential targets of a call.

tests/compiler/dart2js/mock_compiler.dart

Index: tests/compiler/dart2js/mock_compiler.dart
===================================================================
--- tests/compiler/dart2js/mock_compiler.dart	(revision 21439)
+++ tests/compiler/dart2js/mock_compiler.dart	(working copy)
@@ -62,6 +62,7 @@
   unwrapException(e) {}
   assertHelper(a){}
   createRuntimeType(a) {}
+  createInvocationMirror(a0, a1, a2, a3, a4, a5) {}
   throwNoSuchMethod(obj, name, arguments, expectedArgumentNames) {}
   throwAbstractClassInstantiationError(className) {}''';
 
@@ -140,6 +141,7 @@
   class Object {
     operator ==(other) {}
     String toString() { return null; }
+    noSuchMethod(im) { throw im; }
   }
   class Type {}
   class Function {}