Implement operator== and hashCode for bound closures.

sdk/lib/_internal/compiler/implementation/enqueue.dart

Index: sdk/lib/_internal/compiler/implementation/enqueue.dart
===================================================================
--- sdk/lib/_internal/compiler/implementation/enqueue.dart	(revision 23339)
+++ sdk/lib/_internal/compiler/implementation/enqueue.dart	(working copy)
@@ -209,20 +209,19 @@
       if (member.name == Compiler.NO_SUCH_METHOD) {
         enableNoSuchMethod(member);
       }
-      if (universe.hasInvocation(member, compiler)) {
-        return addToWorkList(member);
-      }
       // If there is a property access with the same name as a method we
       // need to emit the method.
       if (universe.hasInvokedGetter(member, compiler)) {
-        // We will emit a closure, so make sure the closure class is
+        // We will emit a closure, so make sure the bound closure class is
         // generated.
-        compiler.closureClass.ensureResolved(compiler);
-        registerInstantiatedClass(compiler.closureClass,
+        registerInstantiatedClass(compiler.boundClosureClass,
                                   // Precise dependency is not important here.
                                   compiler.globalDependencies);
         return addToWorkList(member);
       }
+      if (universe.hasInvocation(member, compiler)) {
+        return addToWorkList(member);
+      }
     } else if (member.kind == ElementKind.GETTER) {
       if (universe.hasInvokedGetter(member, compiler)) {
         return addToWorkList(member);
@@ -420,6 +419,10 @@
         } else {
           addToWorkList(member);
         }
+        if (selector.isGetter() && member.isFunction()) {
+          registerInstantiatedClass(compiler.boundClosureClass,
+                                    compiler.globalDependencies);
+        }
         return true;
       }
       return false;
@@ -439,6 +442,8 @@
 
   void registerGetOfStaticFunction(FunctionElement element) {
     registerStaticUse(element);
+    registerInstantiatedClass(compiler.closureClass,
+                              compiler.globalDependencies);
     universe.staticFunctionsNeedingGetter.add(element);
   }