Address late comments from CL 50313007.

dart/sdk/lib/_internal/compiler/implementation/js_emitter/container_builder.dart

Index: dart/sdk/lib/_internal/compiler/implementation/js_emitter/container_builder.dart
diff --git a/dart/sdk/lib/_internal/compiler/implementation/js_emitter/container_builder.dart b/dart/sdk/lib/_internal/compiler/implementation/js_emitter/container_builder.dart
index f55026a806851c867fee259d14676437a3f09cb9..254b28e8606ca93c0ab76199835ce9f790d0fa0f 100644
--- a/dart/sdk/lib/_internal/compiler/implementation/js_emitter/container_builder.dart
+++ b/dart/sdk/lib/_internal/compiler/implementation/js_emitter/container_builder.dart
@@ -167,10 +167,6 @@ class ContainerBuilder extends CodeEmitterHelper {
     // (4) No stub generated, call is direct.
     // (5) No stub generated, call is direct.
 
-    Set<Selector> selectors = member.isInstanceMember()
-        ? compiler.codegenWorld.invokedNames[member.name]
-        : null; // No stubs needed for static methods.
-
     /// Returns all closure call selectors renamed to match this member.
     Set<Selector> callSelectorsAsNamed() {
       if (!canTearOff) return null;
@@ -183,6 +179,10 @@ class ContainerBuilder extends CodeEmitterHelper {
             callSelector.argumentCount, callSelector.namedArguments);
       }).toSet();
     }
+
+    Set<Selector> selectors = member.isInstanceMember()
+        ? compiler.codegenWorld.invokedNames[member.name]
+        : null; // No stubs needed for static methods.
     if (selectors == null) {
       selectors = callSelectorsAsNamed();
       if (selectors == null) return;
@@ -336,7 +336,7 @@ class ContainerBuilder extends CodeEmitterHelper {
         canTearOff = false;
         isClosure = true;
       } else {
-        // Careful with operators.
+        // TODO(ahe): What happens if an operator is passed to getterName?
         canTearOff = compiler.codegenWorld.hasInvokedGetter(member, compiler);
         tearOffName = namer.getterName(member);
       }
@@ -435,7 +435,10 @@ class ContainerBuilder extends CodeEmitterHelper {
           // stubs for implicit closures.
           expressions.add("null");
           // TOOD(ahe): Since we know when reading static data versus instance
-          // data, we can eliminate this element.
+          // data, we can eliminate this element from the emitted array. In
+          // other words, instead of generating [..., foo, null, bar, ...], we
+          // can generate [..., foo, bar, ...] and adjust the index differently
+          // when reading this information from a static function.
         }
         Set<Selector> callSelectors = compiler.codegenWorld.invokedNames[
             namer.closureInvocationSelectorName];