Fix up dromaeo after lib v2 merge and add Dromaeo smoketest to prevent future

samples/third_party/dromaeo/README

 This is a port of the Dromaeo benchmark (http://dromaeo.com/) to Dart.
 See the attached LICENSE file in this directory.
 
 To run the native Dart versions on Dartium: 
 
 (1) Use a Dartium chrome binary to open index.html in this directory.
 By default, this will run JS vs a native Dart version (dart:html)
 designed to match the JS for speed.
 
 To run compiled versions on standard browsers:
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 - js : The original JS.
 - dart : Dart, running natively (Dartium only).
 - frog : Dart, compiled to JS with Frog.
 - dart2js : Dart, compiled to JS with dart2js.
 
 It also includes the following versions for Dart modes:
 
 - dom : The old deprecated dart:dom.
 - html : The new dart:html, using fast path APIs to match JS.
-- htmlidiomatic : The new dart:html, using nicer APIs at potential performance cost.
 
 Finally, Dart Dromaeo runs the following suites of benchmarks:
 - attributes : Setting and getting DOM node attributes.
 - modify : Creating and injecting DOM nodes into a document.
 - query : Querying DOM elements in a document.
 - traverse : Traversing a DOM structure.
 
 You can specify a disjunction of conjunctions from the three buckets
 above.  Examples:
 
 To run the attributes suite on JS, Dartium, and Dart2JS, load:
 
 - index.html?js&attributes|dart&attributes&html|dart2js&attributes&html
 
-To run the fast and idiomatic versions of the query suite with
-Dart2JS, load:
+To run the query suite with Dart2JS, load:
 
-- index-js.html?dart&query&html|dart&query&htmlidiomatic
+- index-js.html?dart&query&html
 
 To run all tests in Dartium, load:
 
 - index.html?js|dart|frog|dart2js
 
 To run all tests (except the native Dart) in a regular browser, load:
 
 - index-js.html?js|frog|dart2js