Switch ddc to use @JS instead of @JSName

test/codegen/sunflower/dom.dart

 // Copyright (c) 2015, 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.
 
-@JsName(name: 'window')
+@js.JS('window')
 library dom;
 
-@JsName()
+import 'package:js/js.dart' as js;
+
+@js.JS()
 class Window {}
 
-class JsName {
-  /// The JavaScript name.
-  /// Used for classes and libraries.
-  /// Note that this could be an expression, e.g. `lib.TypeName` in JS, but it
-  /// should be kept simple, as it will be generated directly into the code.
-  final String name;
-  const JsName({this.name});
-}
 class Overload {
   const Overload();
 }
 const overload = const Overload();
 
 external Document get document;
 external Window get window;
 
-@JsName()
+@js.JS()
 abstract class Document extends Node {
   Element createElement(String name);
   Element querySelector(String selector);
 
   HTMLElement head;
   HTMLElement body;
 }
 
-@JsName()
+@js.JS()
 class Blob {
   external Blob(blobParts, {String type});
 }
 
 class CustomEvent {
   external CustomEvent(String type, {detail, bubbles, cancelable});
 }
 
-@JsName()
+@js.JS()
 abstract class Element extends Node {
   void addEventListener(String type, EventListener callback, [bool capture]);
   String textContent;
 }
 
-@JsName()
+@js.JS()
 abstract class HTMLElement extends Element {
   String innerHTML;
   HTMLCollection get children;
 }
 
-@JsName()
+@js.JS()
 abstract class Node {
   bool hasChildNodes();
   NodeList get childNodes;
 
   Node insertBefore(Node node, [Node child]);
   Node appendChild(Node node);
   Node replaceChild(Node node, Node child);
   Node removeChild(Node child);
 }
 
 abstract class HTMLCollection {
   int get length;
   external Element operator [](num index);
 }
 
-@JsName()
+@js.JS()
 class NodeList {
   external NodeList();
   external num get length;
   external set length(num _);
   external Node item(num index);
 
   external Node operator [](num index);
   external void operator []=(num index, Node);
 }
 
 typedef void EventListener(Event e);
 
-@JsName()
+@js.JS()
 abstract class Event {}
 
 // TODO(jmesserly): rename these
-@JsName(name: 'HTMLInputElement')
+@js.JS('HTMLInputElement')
 abstract class InputElement extends HTMLElement {
   String value;
 }
 
-@JsName(name: 'HTMLCanvasElement')
+@js.JS('HTMLCanvasElement')
 abstract class CanvasElement extends HTMLElement {
   RenderingContext getContext(String contextId);
 }
 
-@JsName(name: 'HTMLDivElement')
+@js.JS('HTMLDivElement')
 abstract class DivElement extends HTMLElement {
   RenderingContext getContext(String contextId);
 }
 
-@JsName(name: 'HTMLScriptElement')
+@js.JS('HTMLScriptElement')
 abstract class ScriptElement extends HTMLElement {
   String type;
 }
 
 
 // TODO(jmesserly): union type of CanvasRenderingContext2D and
 // WebGLRenderingContext
 abstract class RenderingContext {}
 
 // http://www.w3.org/html/wg/drafts/2dcontext/html5_canvas_CR/
-@JsName()
+@js.JS()
 abstract class CanvasRenderingContext2D
     implements CanvasDrawingStyles, CanvasPathMethods, RenderingContext {
 
   // back-reference to the canvas
   CanvasElement get canvas;
 
   // state
   void save(); // push state on state stack
   void restore(); // pop state stack and restore state
 
@@ skipping 95 matching lines @@
   void moveTo(num x, num y);
   void lineTo(num x, num y);
   void quadraticCurveTo(num cpx, num cpy, num x, num y);
   void bezierCurveTo(num cp1x, num cp1y, num cp2x, num cp2y, num x, num y);
   void arcTo(num x1, num y1, num x2, num y2, num radius);
   void rect(num x, num y, num w, num h);
   void arc(num x, num y, num radius, num startAngle, num endAngle,
       [bool anticlockwise]);
 }
 
-@JsName()
+@js.JS()
 abstract class CanvasGradient {
   // opaque object
   void addColorStop(num offset, String color);
 }
 
-@JsName()
+@js.JS()
 abstract class CanvasPattern {
   // opaque object
 }
 
-@JsName()
+@js.JS()
 abstract class TextMetrics {
   num get width;
 }
 
-@JsName()
+@js.JS()
 abstract class ImageData {
   int get width;
   int get height;
   // TODO: readonly Uint8ClampedArray data;
 }