Unbreak closure invocation name minification.

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

Index: sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
diff --git a/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart b/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
index 42c2571fa633d7dafee52523887a268e2530fd67..5de194ab8f004f5590dc4a80691daccf292a9bd5 100644
--- a/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
@@ -178,7 +178,7 @@ class Namer implements ClosureNamer {
     // is generated by string concatenation in applyFunction from
     // js_helper.dart.
     var proposedName = '$base\$$arity';
-    if (base == closureInvocationSelectorName) return proposedName;
+    if (name == closureInvocationSelectorName) return proposedName;
     return getMappedInstanceName(proposedName);
   }
 
@@ -200,7 +200,9 @@ class Namer implements ClosureNamer {
       // We don't mangle the closure invoking function name because it
       // is generated by string concatenation in applyFunction from
       // js_helper.dart.
-      if (selector.isClosureCall()) return "$name$suffix";
+      if (selector.isCall() && name == closureInvocationSelectorName) {
+        return "$name$suffix";
+      }
       String proposedName = privateName(selector.library, name);
       return getMappedInstanceName('$proposedName$suffix');
     }