Move sky-*.sky into framework/elements

We're not actively developing these at the moment.

I could also just delete them, not sure if we're ready for that yet.

TBR=abarth@chromium.org

Review URL: https://codereview.chromium.org/999873002

examples/custom-element/example-element.sky

@@ -3,7 +3,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 -->
-<import src="/sky/framework/sky-element.sky" />
+<import src="/sky/framework/elements/sky-element.sky" />
 <sky-element>
 <template>
   <style>

examples/scrolling/scrolling.sky

@@ -3,8 +3,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 -->
-<import src="/sky/framework/sky-element.sky" />
-<import src="/sky/framework/sky-scrollable.sky" />
+<import src="/sky/framework/elements/sky-element.sky" />
+<import src="/sky/framework/elements/sky-scrollable.sky" />
 
 <sky-element>
 <template>

examples/stocks/stock-arrow.sky

@@ -3,7 +3,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 -->
-<import src="/sky/framework/sky-element.sky" />
+<import src="/sky/framework/elements/sky-element.sky" />
 
 <sky-element attributes="change:number">
 <template>

examples/stocks/stock.sky

@@ -3,8 +3,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 -->
-<import src="/sky/framework/material-element.sky" />
-<import src="/sky/framework/sky-element.sky" />
+<import src="/sky/framework/elements/material-element.sky" />
+<import src="/sky/framework/elements/sky-element.sky" />
 <import src="stock-arrow.sky" />
 
 <sky-element>

examples/stocks/stocks.sky

@@ -3,14 +3,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 -->
-<import src="/sky/framework/sky-drawer-header.sky" />
-<import src="/sky/framework/sky-drawer.sky" />
-<import src="/sky/framework/sky-element.sky" />
-<import src="/sky/framework/sky-icon.sky" />
-<import src="/sky/framework/sky-menu-divider.sky" />
-<import src="/sky/framework/sky-menu-item.sky" />
-<import src="/sky/framework/sky-scrollable.sky" />
-<import src="/sky/framework/sky-toolbar.sky" />
+<import src="/sky/framework/elements/sky-drawer-header.sky" />
+<import src="/sky/framework/elements/sky-drawer.sky" />
+<import src="/sky/framework/elements/sky-element.sky" />
+<import src="/sky/framework/elements/sky-icon.sky" />
+<import src="/sky/framework/elements/sky-menu-divider.sky" />
+<import src="/sky/framework/elements/sky-menu-item.sky" />
+<import src="/sky/framework/elements/sky-scrollable.sky" />
+<import src="/sky/framework/elements/sky-toolbar.sky" />
 <import src="stock.sky" as='view'/>
 
 <sky-element>

examples/widgets/widget-root.sky

@@ -3,13 +3,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 -->
-<import src="/sky/framework/sky-box.sky" />
-<import src="/sky/framework/sky-button.sky" />
-<import src="/sky/framework/sky-checkbox.sky" />
-<import src="/sky/framework/sky-element.sky" />
-<import src="/sky/framework/sky-input.sky" />
-<import src="/sky/framework/sky-radio.sky" />
-<import src="/sky/framework/sky-scrollable.sky" />
+<import src="/sky/framework/elements/sky-box.sky" />
+<import src="/sky/framework/elements/sky-button.sky" />
+<import src="/sky/framework/elements/sky-checkbox.sky" />
+<import src="/sky/framework/elements/sky-element.sky" />
+<import src="/sky/framework/elements/sky-input.sky" />
+<import src="/sky/framework/elements/sky-radio.sky" />
+<import src="/sky/framework/elements/sky-scrollable.sky" />
 <sky-element>
 <template>
   <style>