Rationalize Dart mojo and sky package structure

sky/framework/elements/sky-input.sky

Index: sky/framework/elements/sky-input.sky
diff --git a/sky/framework/elements/sky-input.sky b/sky/framework/elements/sky-input.sky
deleted file mode 100644
index abc63113c2e26dd9296a91d207f055890b4def4e..0000000000000000000000000000000000000000
--- a/sky/framework/elements/sky-input.sky
+++ /dev/null
@@ -1,79 +0,0 @@
-<!--
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
--->
-<import src="sky-element.sky" />
-
-<sky-element name="sky-input" attributes="value:string">
-<template>
-  <style>
-  :host {
-    display: flex;
-    flex-direction: row;
-  }
-  #control {
-    margin: 8px;
-    padding: 8px;
-    border-bottom: 1px solid #E7E7E7;
-    flex: 1;
-    align-self: center;
-    height: 1.2em;
-    white-space: nowrap;
-    overflow: hidden;
-  }
-  #control.focused {
-    padding-bottom: 7px;
-    border-bottom: 2px solid #009cf3;
-  }
-  </style>
-  <div id="control" contenteditable />
-</template>
-<script>
-import "dart:sky";
-
-// TODO(abarth): Connect to the mojo:keyboard service.
-
-@Tagname('sky-input')
-class SkyInput extends SkyElement {
-  Element _control;
-
-  static String _textForValue(String value) => value == null ? '' : value;
-
-  shadowRootReady() {
-    _control = shadowRoot.getElementById('control');
-    _control.setChild(new Text(_textForValue(getAttribute('text'))));
-    _control.addEventListener('focus', _handleFocus);
-    _control.addEventListener('blur', _handleBlur);
-    _control.addEventListener('keydown', _handleKeyDown);
-  }
-
-  String get text => _control == null ? null : _control.textContent;
-
-  void textChanged(String oldValue, String newValue) {
-    if (_control != null)
-      _control.setChild(new Text(_textForValue(newValue)));
-  }
-
-  void _handleKeyDown(KeyboardEvent event) {
-    // TODO(abarth): You can still get newlines if the user pastes them.
-    if (event.key == 0xD)
-      event.preventDefault();
-  }
-
-  void _handleFocus(_) {
-    if (_control)
-      _control.setAttribute('class', 'focused');
-    // TODO(abarth): Show the keyboard.
-  }
-
-  void _handleBlur(_) {
-    if (_control)
-      _control.removeAttribute('class');
-    // TODO(abarth): Hide the keyboard.
-  }
-}
-
-_init(script) => register(script, SkyInput);
-</script>
-</sky-element>