Upgrade to 1.0 and switch clients to dom-repeat where needed.

third_party/polymer/v0_8/components/paper-spinner/README.md

Index: third_party/polymer/v0_8/components/paper-spinner/README.md
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+paper-spinner
+=============
+
+Element providing material design circular spinner.
+
+##### Example
+
+```html
+<paper-spinner active></paper-spinner>
+```
+
+The default spinner cycles between four layers of colors; by default they are
+blue, red, yellow and green. It can be customized so that it uses one color only
+by setting all the layer colors to the same value.
+
+##### Example
+
+```html
+<style is="custom-style">
+  paper-spinner .rainbow {
+    --paper-spinner-layer-1-color: yellow;
+    --paper-spinner-layer-2-color: red;
+    --paper-spinner-layer-3-color: blue;
+    --paper-spinner-layer-4-color: green;
+  }
+
+  paper-spinner .red {
+    --paper-spinner-layer-1-color: red;
+    --paper-spinner-layer-2-color: red;
+    --paper-spinner-layer-3-color: red;
+    --paper-spinner-layer-4-color: red;
+  }
+</style>
+```
+
+Alt attribute should be set to provide adequate context for accessibility. If not provided,
+it defaults to 'loading'.
+Empty alt can be provided to mark the element as decorative if alternative content is provided
+in another form (e.g. a text block following the spinner).
+
+##### Example
+
+```html
+<paper-spinner alt="Loading contacts list" active></paper-spinner>
+```