Pull web-animations-js into third-party via the third_party/polymer/reproduce.sh script. Add necess…

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

+### 1.0.5 - *January 6 2015*
+
+  * Fix loading the polyfill in an SVG document
+  * Fix a problem where groups didn't take effect in their first frame
+  * Don't rely on performance.now
+
+### 1.0.4 - *December 8 2014*
+
+  * Fix a critical bug where deprecation logic wasn't being loaded
+    when `web-animations-next` and `web-animations-next-lite` were
+    executed on top of a native `element.animate`.
+
+### 1.0.3 - *December 4 2014*
+
+  * Fix a critical bug on iOS 7 and Safari <= 6. Due to limitations,
+    inline style patching is not supported on these platforms.
+
+### 1.0.2 - *November 28 2014*
+
+  * Deprecated `AnimationTiming.playbackRate`.
+
+    For example, this is no longer supported:
+
+        var player = element.animate(
+            keyframes,
+            {duration: 1000, playbackRate: 2});
+
+    Use `AnimationPlayer.playbackRate` instead:
+
+        var player = element.animate(
+            keyframes,
+            {duration: 1000});
+        player.playbackRate = 2;
+
+    If you have any feedback on this change, please start a discussion
+    on the public-fx mailing list:
+    http://lists.w3.org/Archives/Public/public-fx/
+
+    Or file an issue against the specification on GitHub:
+    https://github.com/w3c/web-animations/issues/new
+
+### 1.0.1 - *November 26 2014*
+
+  * Players should be constructed in idle state
+  * `play()` and `reverse()` should not force a start times
+  * Add `requestAnimationFrame` ids and `cancelAnimationFrame`
+
+### 1.0.0 — *November 21 2014*
+
+  The web-animations-js hackers are pleased to announce the release of
+  a new codebase for the Web Animations Polyfill:
+  https://github.com/web-animations/web-animations-js
+
+  The previous polyfill has been moved to:
+  https://github.com/web-animations/web-animations-js-legacy
+
+  The new codebase is focused on code-size -- our smallest target is
+  now only 33kb or 11kb after gzip.
+
+  We've implemented native fallback. If the target browser provides
+  Web Animations features natively, the Polyfill will use them.
+
+  We now provide three different build targets:
+
+  `web-animations.min.js` - Tracks the Web Animations features that
+  are supported natively in browsers. Today that means Element.animate
+  and Playback Control in Chrome. If you’re not sure what features you
+  will need, start with this.
+
+  `web-animations-next.min.js` - All of web-animations.min.js plus
+  features that are still undergoing discussion or have yet to be
+  implemented natively.
+
+  `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.