'Moved all documentation from old .dartdoc files.'

tools/dom/templates/html/dart2js/html_dart2js.darttemplate

Index: tools/dom/templates/html/dart2js/html_dart2js.darttemplate
diff --git a/tools/dom/templates/html/dart2js/html_dart2js.darttemplate b/tools/dom/templates/html/dart2js/html_dart2js.darttemplate
index f87c1b2cb7926f71968323c853215940109d5285..20350cc3ea1e0cf5c5a20149fbba64fc6300ee10 100644
--- a/tools/dom/templates/html/dart2js/html_dart2js.darttemplate
+++ b/tools/dom/templates/html/dart2js/html_dart2js.darttemplate
@@ -5,6 +5,7 @@
 // DO NOT EDIT
 // Auto-generated dart:html library.
 
+/// The Dart HTML library.
 library dart.dom.html;
 
 import 'dart:async';
@@ -49,8 +50,14 @@ part '$AUXILIARY_DIR/dart2js_TypedArrayFactoryProvider.dart';
 part '$AUXILIARY_DIR/_ListIterators.dart';
 
 
+/**
+ * The top-level Window object.
+ */
 Window get window => JS('Window', 'window');
 
+/**
+ * The top-level Document object.
+ */
 HtmlDocument get document => JS('Document', 'document');
 
 Element query(String selector) => document.query(selector);