Clean up dump-info and js_backend.

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

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of js_backend;
 
 const VERBOSE_OPTIMIZER_HINTS = false;
 
 class JavaScriptItemCompilationContext extends ItemCompilationContext {
   final Set<HInstruction> boundsChecked = new Set<HInstruction>();
@@ skipping 925 matching lines @@
                                               DartType bound) {
     rti.registerTypeVariableBoundsSubtypeCheck(typeArgument, bound);
   }
 
   void registerCheckDeferredIsLoaded(Registry registry) {
     enqueueInResolution(getCheckDeferredIsLoaded(), registry);
     // Also register the types of the arguments passed to this method.
     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) {
     if (enqueuer.isResolutionQueue) {
       for (String name in const [START_ROOT_ISOLATE,
                                  '_currentIsolate',
                                  '_callInIsolate']) {
         Element element = find(isolateHelperLibrary, name);
         enqueuer.addToWorkList(element);
         compiler.globalDependencies.registerDependency(element);
@@ skipping 1358 matching lines @@
   }
 }
 
 /// Records that [constant] is used by the element behind [registry].
 class Dependency {
   final Constant constant;
   final Element annotatedElement;
 
   const Dependency(this.constant, this.annotatedElement);
 }