Deprecate query and queryAll, also add back querySelector and querySelectorAll.

tools/dom/docs/docs.json

 {
   "dart.dom.html": {
     "CanvasGradient": {
       "comment": [
         "/**",
         " * An opaque canvas object representing a gradient.",
         " *",
         " * Created by calling [createLinearGradient] or [createRadialGradient] on a",
         " * [CanvasRenderingContext2D] object.",
         " *",
@@ skipping 111 matching lines @@
         " * Each web page loaded in the browser has its own [Document] object, which is",
         " * typically an [HtmlDocument].",
         " *",
         " * If you aren't comfortable with DOM concepts, see the Dart tutorial",
         " * [Target 2: Connect Dart & HTML](http://www.dartlang.org/docs/tutorials/connect-dart-html/).",
         " */"
       ],
       "members": {
         "querySelector": [
           "/**",
-          " * Finds the first descendant element of this document that matches the",
-          " * specified group of selectors.",
-          " *",
-          " * Unless your webpage contains multiple documents, the top-level query",
-          " * method behaves the same as this method, so you should use it instead to",
-          " * save typing a few characters.",
-          " *",
-          " * [selectors] should be a string using CSS selector syntax.",
-          " *     var element1 = document.query('.className');",
-          " *     var element2 = document.query('#id');",
-          " *",
-          " * For details about CSS selector syntax, see the",
-          " * [CSS selector specification](http://www.w3.org/TR/css3-selectors/).",
-          " */"
+          "   * Finds the first descendant element of this document that matches the",
+          "   * specified group of selectors.",
+          "   *",
+          "   * Unless your webpage contains multiple documents, the top-level",
+          "   * [querySelector]",
+          "   * method behaves the same as this method, so you should use it instead to",
+          "   * save typing a few characters.",
+          "   *",
+          "   * [selectors] should be a string using CSS selector syntax.",
+          "   *     var element1 = document.querySelector('.className');",
+          "   *     var element2 = document.querySelector('#id');",
+          "   *",
+          "   * For details about CSS selector syntax, see the",
+          "   * [CSS selector specification](http://www.w3.org/TR/css3-selectors/).",
+          "   */"
         ]
       }
     },
     "Element": {
       "comment": [
         "/**",
         " * An abstract class, which all HTML elements extend.",
         " */"
       ],
       "members": {
         "querySelector": [
           "/**",
-          " * Finds the first descendant element of this element that matches the",
-          " * specified group of selectors.",
-          " *",
-          " * [selectors] should be a string using CSS selector syntax.",
-          " *",
-          " *     // Gets the first descendant with the class 'classname'",
-          " *     var element = element.query('.className');",
-          " *     // Gets the element with id 'id'",
-          " *     var element = element.query('#id');",
-          " *     // Gets the first descendant [ImageElement]",
-          " *     var img = element.query('img');",
-          " *",
-          " * See also:",
-          " *",
-          " * * [CSS Selectors](http://docs.webplatform.org/wiki/css/selectors)",
-          " */"
+          "   * Finds the first descendant element of this element that matches the",
+          "   * specified group of selectors.",
+          "   *",
+          "   * [selectors] should be a string using CSS selector syntax.",
+          "   *",
+          "   *     // Gets the first descendant with the class 'classname'",
+          "   *     var element = element.querySelector('.className');",
+          "   *     // Gets the element with id 'id'",
+          "   *     var element = element.querySelector('#id');",
+          "   *     // Gets the first descendant [ImageElement]",
+          "   *     var img = element.querySelector('img');",
+          "   *",
+          "   * See also:",
+          "   *",
+          "   * * [CSS Selectors](http://docs.webplatform.org/wiki/css/selectors)",
+          "   */"
         ]
       }
     },
     "HTMLAreaElement": {
       "comment": [
         "/**",
         " * DOM Area Element, which links regions of an image map with a hyperlink.",
         " *",
         " * The element can also define an uninteractive region of the map.",
         " *",
@@ skipping 358 matching lines @@
           "   *",
           "   * [oldVersion] should match the database's current [version] exactly.",
           "   *",
           "   * * [Database.changeVersion](http://www.w3.org/TR/webdatabase/#dom-database-changeversion) from W3C.",
           "   */"
         ]
       }
     }
   }
 }