Merge libv1.

samples/third_party/dromaeo/tests/dom-attr-htmlidiomatic.dart

-#library("dom_attr_html");
-#import("dart:html");
-#import("dart:json");
-#import("dart:math", prefix: "Math");
-#source("Common.dart");
-#source("RunnerSuite.dart");
+library dom_attr_html;
+import 'dart:html';
+import 'dart:json';
+import 'dart:math' as Math;
+part 'Common.dart';
+part 'RunnerSuite.dart';
 
 void main() {
   final int num = 10240;
 
   // Try to force real results.
   var ret;
 
   Element elem = document.query('#test1');
   Element a = document.queryAll('a')[0];
 
   new Suite(window, 'dom-attr')
     .test('getAttribute', () {
       for (int i = 0; i < num; i++)
         ret = elem.attributes['id'];
     })
     .test('element.property', () {
       for (int i = 0; i < num * 2; i++)
         ret = elem.id;
     })
     .test('setAttribute', () {
         for (int i = 0; i < num; i++)
         a.attributes['id'] = 'foo';
     })
     .test('element.property = value', () {
       for (int i = 0; i < num; i++)
         a.id = 'foo';
     })
     .end();
 }