[Polymer] update third_party polymer

third_party/web-animations-js/sources/History.md

+### 2.2.0 - *April 6 2016*
+  * Deprecated the use of hyphens in property names.
+
+    For example, this is deprecated:
+
+        element.animate([{'font-size': '0px'}, {'font-size': '10px'}]);
+
+    and this should be used instead:
+
+        element.animate([{fontSize: '0px'}, {fontSize: '10px'}]);
+
+  * Added arbitrary easing capitalisation.
+
+  * Added "id" effect option. (http://w3c.github.io/web-animations/#dom-keyframeanimationoptions-id)
+
+  * Added "oncancel" event handler.
+
+  * Added value list keyframe syntax.
+
+    As as alternative to:
+
+        element.animate([{color: 'red'}, {color: 'green'}, {color: 'blue'}]);
+
+    you can now use:
+
+        element.animate({color: ['red', 'green', 'blue']});
+
+  * Fixed easing TypeError in FireFox Nightly when using groups.
+
+  * Fixed delayed animation updates on Safari and Firefox
+
+  * Fixed infinite recursion when setting onfinish to null.
+
+### 2.1.4 - *December 1 2015*
+  * Use `Date.now()` instead of `performace.now()` for mobile Safari.
+
+### 2.1.3 - *October 12 2015*
+  * Removed web-animations.min.js.gz
+
 ### 2.1.2 - *July 8 2015*
   * Fix a bug where onfinish was being called for GroupEffects before they were finished.
 
 ### 2.1.1 - *July 1 2015*
   * Add Animation.timeline getter
   * Add AnimationEffect.parent getter
   * Make AnimationEffectTiming (returned by AnimationEffect.timing) attributes mutable
   * Expose the Animation constructor
   * Change custom effects from AnimationEffects to onsample functions. Custom effects should now be created by setting the onsample attribute of a KeyframeEffect.
 
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   `web-animations-next-lite.min.js` - A cut down version of
   web-animations-next, removes several lesser used property handlers
   and some of the larger and less used features such as matrix
   interpolation/decomposition.
 
   Not all features of the previous polyfill have been ported to the
   new codebase; most notably mutation of Animations and Groups and
   Additive Animations are not yet supported. These features are still
   important and will be implemented in the coming weeks.