Fix Polymer licensing issues

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

Index: third_party/web-animations-js/sources/History.md
diff --git a/third_party/web-animations-js/sources/History.md b/third_party/web-animations-js/sources/History.md
index 1cac716adbcf81957b1395e2b6ff141bf3d98be2..c612d230a7c62a1645d9b8194a7b7bb5ba02d0a9 100644
--- a/third_party/web-animations-js/sources/History.md
+++ b/third_party/web-animations-js/sources/History.md
@@ -1,3 +1,39 @@
+### 2.1.0 - *June 15 2015*
+  * Fix bug affecting GroupEffects with infinite iteration children
+  * Add GroupEffect.firstChild and GroupEffect.lastChild
+  * Add initial values for most CSS properties
+  * Allow `timeline.play()` to be called with no arguments
+  * Add AnimationEffect.clone
+  * Add GroupEffect.append and GroupEffect.prepend
+  * Add AnimationEffect.remove
+  * Add Animation.ready and Animation.finished promises
+
+### 2.0.0 - *April 5 2015*
+
+  * Improve behavior of group Animation playback rate.
+  * Rename Animation to KeyframeEffect.
+  * Rename AnimationSequence to SequenceEffect.
+  * Rename AnimationGroup to GroupEffect.
+  * Rename AnimationPlayer to Animation.
+  * Remove KeyframeEffect.effect and add KeyframeEffect.getFrames.
+  * Rename Animation.source to Animation.effect.
+  * Rename Timeline.getAnimationPlayers to Timeline.getAnimations.
+  * Rename Element.getAnimationPlayers to Element.getAnimations.
+
+### 1.0.7 - *March 10 2015*
+
+  * Improve performance of constructing groups and sequences.
+  * Remove support for animating zoom.
+  * Add bower file.
+
+### 1.0.6 - *February 5 2015*
+
+  * Implement playbackRate setter for group players.
+  * Fix pausing a group player before its first tick.
+  * Fix cancelling a group player before its first tick.
+  * Fix excess CPU use on idle pages where custom effects and groups were used.
+  * Suppress AnimationTiming.playbackRate deprecation warning for cases where AnimationTiming.playbackRate == 1.
+
 ### 1.0.5 - *January 6 2015*
 
   * Fix loading the polyfill in an SVG document