Clean up dump-info and js_backend.

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

Index: sdk/lib/_internal/compiler/implementation/js_backend/backend.dart
diff --git a/sdk/lib/_internal/compiler/implementation/js_backend/backend.dart b/sdk/lib/_internal/compiler/implementation/js_backend/backend.dart
index 810eee3eb7e6122db5eec639e67f37a5728499bb..31a47da2e73dc07602d976eb22f7d6f78ba199f9 100644
--- a/sdk/lib/_internal/compiler/implementation/js_backend/backend.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_backend/backend.dart
@@ -943,9 +943,11 @@ class JavaScriptBackend extends Backend {
     enqueueClass(compiler.enqueuer.resolution, compiler.stringClass, registry);
   }
 
-  void enableNoSuchMethod(context, Enqueuer world) {
+  void enableNoSuchMethod(Element context, Enqueuer world) {
     enqueue(world, getCreateInvocationMirror(), compiler.globalDependencies);
     world.registerInvocation(compiler.noSuchMethodSelector);
+    // TODO(tyoverby) send the context element to DumpInfoTask to be

[sigurdm, 2014/08/20 08:37:47]

another nit: 
colon after the todo, and start sentence with capital letter:
// TODO(tyoverby): Send the context element to DumpInfoTask to be

[Ty Overby (Google), 2014/08/20 17:23:51]

Done.

+    // blamed.
   }
 
   void enableIsolateSupport(Enqueuer enqueuer) {