Fix Polymer licensing issues

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

 
 Quick Start
 -----------
 
 To provide native Chrome Web Animation features (`Element.animate` and Playback
 Control) in other browsers, use `web-animations.min.js`. To explore all of the
 proposed Web Animations API, use `web-animations-next.min.js`.
 
 What is Web Animations?
 -----------------------
@@ skipping 17 matching lines @@
 ---------------
 
 Here's a simple example of an animation that scales and changes the opacity of
 a `<div>` over 0.5 seconds. The animation alternates producing a pulsing
 effect.
 
     <script src="web-animations.min.js"></script>
     <div class="pulse" style="width:150px;">Hello world!</div>
     <script>
         var elem = document.querySelector('.pulse');
-        var player = elem.animate([
+        var animation = elem.animate([
             {opacity: 0.5, transform: "scale(0.5)"},
             {opacity: 1.0, transform: "scale(1)"}
         ], {
             direction: 'alternate',
             duration: 500,
             iterations: Infinity
         });
     </script>
 
 Web Animations supports off-main-thread animations, and also allows procedural
 generation of animations and fine-grained control of animation playback. See
 <http://web-animations.github.io> for ideas and inspiration!
 
 Native Fallback
 ---------------
 
-When the polyfill runs on a browser that implements Element.animate and
-AnimationPlayer Playback Control it will detect and use the underlying native
+When the polyfill runs on a browser that implements `Element.animate` and
+`Animation` Playback Control it will detect and use the underlying native
 features.
 
 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
 
 Contains 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, it removes several lesser used
 property handlers and some of the larger and less used features such as matrix
 interpolation/decomposition.
 
 ### Build Target Comparison
 
 |                        | web-animations | web-animations-next | web-animations-next-lite |
 |------------------------|:--------------:|:-------------------:|:------------------------:|
 |Size (gzipped)          | 12.5kb         | 14kb                | 10.5kb                   |
 |Element.animate         | ✔             | ✔                  | ✔                       |
-|Timing input (easings, duration, fillMode, etc.) for animations| ✔ | ✔ | ✔             | 
+|Timing input (easings, duration, fillMode, etc.) for animation effects| ✔ | ✔ | ✔             | 
 |Playback control        | ✔             | ✔                  | ✔                       |
 |Support for animating lengths, transforms and opacity| ✔ | ✔ | ✔                       |
-|Support for Animating other CSS properties| ✔ | ✔            | 🚫                       |
+|Support for animating other CSS properties| ✔ | ✔            | 🚫                       |
 |Matrix fallback for transform animations | ✔ | ✔             | 🚫                       |
-|Animation constructor   | 🚫             | ✔                  | ✔                       |
-|Simple Groups           | 🚫             | ✔                  | ✔                       |
+|KeyframeEffect constructor   | 🚫             | ✔                  | ✔                       |
+|Simple GroupEffects & SequenceEffects           | 🚫             | ✔                  | ✔                       |
 |Custom Effects          | 🚫             | ✔                  | ✔                       |
 |Timing input (easings, duration, fillMode, etc.) for groups</div>| 🚫 | 🚫\* | 🚫         |
-|Additive animation      | 🚫             | 🚫\*                | 🚫                       |
+|Additive animation      | 🚫\*           | 🚫\*                | 🚫                       |
 |Motion path             | 🚫\*           | 🚫\*                | 🚫                       |
-|Modifiable animation timing| 🚫          | 🚫\*                | 🚫\*                     |
+|Modifiable keyframe effect timing| 🚫          | 🚫\*                | 🚫\*                     |
 |Modifiable group timing | 🚫             | 🚫\*                | 🚫\*                     |
 |Usable inline style\*\* | ✔             | ✔                  | 🚫                       |
 
 \* support is planned for these features.
 \*\* see inline style caveat below.
 
 Caveats
 -------
 
 Some things won’t ever be faithful to the native implementation due to browser
@@ skipping 10 matching lines @@
 inline style modification will be overwritten by animations.
 Due to browser constraints inline style modification is not supported on iOS 7
 or Safari 6 (or earlier versions).
 
 ### Prefix handling
 
 The polyfill will automatically detect the correctly prefixed name to use when
 writing animated properties back to the platform. Where possible, the polyfill
 will only accept unprefixed versions of experimental features. For example:
 
-    var animation = new Animation(elem, {"transform": "translate(100px, 100px)"}, 2000);
+    var effect = new KeyframeEffect(elem, {"transform": "translate(100px, 100px)"}, 2000);
 
 will work in all browsers that implement a conforming version of transform, but
 
-    var animation = new Animation(elem, {"-webkit-transform": "translate(100px, 100px)"}, 2000);
+    var effect = new KeyframeEffect(elem, {"-webkit-transform": "translate(100px, 100px)"}, 2000);
 
 will not work anywhere.
 
 API and Specification Feedback
 ------------------------------
 
 File an issue on GitHub: <https://github.com/w3c/web-animations/issues/new>.
 Alternatively, send an email to <public-fx@w3.org> with subject line
 “[web-animations] … message topic …”
 ([archives](http://lists.w3.org/Archives/Public/public-fx/)).
 
 Polyfill Issues
 ---------------
 
 Report any issues with this implementation on GitHub:
 <https://github.com/web-animations/web-animations-next/issues/new>.
 
 Breaking changes
 ----------------
 
 When we make a potentially breaking change to the polyfill's API
-surface (like a rename) where possible we will continue supporting the
+surface (like a rename) we will, where possible, continue supporting the
 old version, deprecated, for three months, and ensure that there are
 console warnings to indicate that a change is pending. After three
 months, the old version of the API surface (e.g. the old version of a
 function name) will be removed. *If you see deprecation warnings you
 can't avoid it by not updating*.
 
 We also announce anything that isn't a bug fix on
 [web-animations-changes@googlegroups.com](https://groups.google.com/forum/#!forum/web-animations-changes).