Do not track parameter types of closures, since closure calls can be generated during the emitter.

sdk/lib/_internal/compiler/implementation/js_backend/backend.dart

Index: sdk/lib/_internal/compiler/implementation/js_backend/backend.dart
===================================================================
--- sdk/lib/_internal/compiler/implementation/js_backend/backend.dart	(revision 17130)
+++ sdk/lib/_internal/compiler/implementation/js_backend/backend.dart	(working copy)
@@ -485,6 +485,13 @@
   void registerDynamicInvocation(HInvokeDynamic node,
                                  Selector selector,
                                  HTypeMap types) {
+    if (selector.isClosureCall()) {
+      // We cannot use the current framework to do optimizations based
+      // on the 'call' selector because we are also generating closure
+      // calls during the emitter phase, which at this point, does not
+      // track parameter types, nor invalidates optimized methods.
+      return;
+    }
     HTypeList providedTypes =
         new HTypeList.fromDynamicInvocation(node, selector, types);
     if (!selectorTypeMap.containsKey(selector)) {