stocks and stocks-fn should share the stocks data

Previously, the two versions of this sample app had separate copies of the
stock data. This CL moves the common data to the common data directory so that
they can share. Also, I've switched the data files to be |dart| files rather
than |sky| files to make them easier to use from fn examples.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/980953002

examples/data/cities.sky → examples/data/cities.dart

-<!--
 // Copyright 2014 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.
--->
-<script>
+
 final List<Map> kData = [
   {"name":"New York","state":"New York","population":8363710},
   {"name":"Los Angeles","state":"California","population":3833995},
@@ -5005,4 +5003,3 @@ final List<Map> kData = [
   {"name":"Hartwell","state":"Georgia","population":4298},
   {"name":"Newport","state":"North Carolina","population":4298}
 ];
-</script>

examples/stocks/companylist.sky → examples/data/stocks.dart

-<script>
+// Copyright 2014 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 "dart:math";
 
 // Snapshot from http://www.nasdaq.com/screening/company-list.aspx
@@ -3013,5 +3016,3 @@ class StockOracle {
 }
 
 final StockOracle oracle = new StockOracle.fromCompanyList(_kCompanyList);
-
-</script>

examples/scrolling/scrolling.sky

@@ -5,7 +5,6 @@
 -->
 <import src="/sky/framework/sky-element.sky" />
 <import src="/sky/framework/sky-scrollable.sky" />
-<import src="../data/cities.sky" as="cities" />
 
 <sky-element>
 <template>
@@ -20,6 +19,7 @@
 </template>
 <script>
 import "dart:sky";
+import "../data/cities.dart" as cities;
 
 @Tagname('scrolling')
 class Scrolling extends SkyElement {

examples/stocks-fn/stocksapp.dart

 library stocksapp;
 
+import '../data/stocks.dart';
 import '../fn/lib/fn.dart';
 import '../fn/widgets/widgets.dart';
 import 'dart:collection';
 import 'dart:math';
 import 'dart:sky' as sky;
 
-part 'companylist.dart';
 part 'stockarrow.dart';
 part 'stocklist.dart';
 part 'stockrow.dart';

examples/stocks/stocks.sky

@@ -12,7 +12,6 @@
 <import src="/sky/framework/sky-scrollable.sky" />
 <import src="/sky/framework/sky-toolbar.sky" />
 <import src="stock.sky" as='view'/>
-<import src='companylist.sky' as='model'/>
 
 <sky-element>
 <template>
@@ -71,6 +70,7 @@
 <script>
 import "dart:sky";
 import "dart:math";
+import "../data/stocks.dart" as model;
 
 List pick(List list, int count) {
   var rng = new Random();