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

third_party/polymer/components-chromium/core-animation/core-animation-group-extracted.js

Index: third_party/polymer/components-chromium/core-animation/core-animation-group-extracted.js
diff --git a/third_party/polymer/components-chromium/core-animation/core-animation-group-extracted.js b/third_party/polymer/components-chromium/core-animation/core-animation-group-extracted.js
new file mode 100644
index 0000000000000000000000000000000000000000..3795c375cf3624ade750b44f0e6bcf1b971f4d74
--- /dev/null
+++ b/third_party/polymer/components-chromium/core-animation/core-animation-group-extracted.js
@@ -0,0 +1,124 @@
+
+    (function() {
+
+      var ANIMATION_GROUPS = {
+        'par': AnimationGroup,
+        'seq': AnimationSequence
+      };
+
+      Polymer('core-animation-group',{
+
+        publish: {
+          /**
+           * If target is set, any children without a target will be assigned the group's
+           * target when this property is set.
+           *
+           * @property target
+           * @type HTMLElement|Node|Array|Array<HTMLElement|Node>
+           */
+
+          /**
+           * For a `core-animation-group`, a duration of "auto" means the duration should
+           * be the specified duration of its children. If set to anything other than
+           * "auto", any children without a set duration will be assigned the group's duration.
+           *
+           * @property duration
+           * @type number
+           * @default "auto"
+           */
+          duration: {value: 'auto', reflect: true},
+
+          /**
+           * The type of the animation group. 'par' creates a parallel group and 'seq' creates
+           * a sequential group.
+           *
+           * @property type
+           * @type String
+           * @default 'par'
+           */
+          type: {value: 'par', reflect: true}
+        },
+
+        typeChanged: function() {
+          this.apply();
+        },
+
+        targetChanged: function() {
+          // Only propagate target to children animations if it's defined.
+          if (this.target) {
+            this.doOnChildren(function(c) {
+              c.target = this.target;
+            }.bind(this));
+          }
+        },
+
+        durationChanged: function() {
+          if (this.duration && this.duration !== 'auto') {
+            this.doOnChildren(function(c) {
+              // Propagate to children that is not a group and has no
+              // duration specified.
+              if (!c.type && (!c.duration || c.duration === 'auto')) {
+                c.duration = this.duration;
+              }
+            }.bind(this));
+          }
+        },
+
+        doOnChildren: function(inFn) {
+          var children = this.children;
+          if (!children.length) {
+            children = this.shadowRoot ? this.shadowRoot.childNodes : [];
+          }
+          Array.prototype.forEach.call(children, function(c) {
+            // TODO <template> in the way
+            c.apply && inFn(c);
+          }, this);
+        },
+
+        makeAnimation: function() {
+          return new ANIMATION_GROUPS[this.type](this.childAnimations, this.timingProps);
+        },
+
+        hasTarget: function() {
+          var ht = this.target !== null;
+          if (!ht) {
+            this.doOnChildren(function(c) {
+              ht = ht || c.hasTarget();
+            }.bind(this));
+          }
+          return ht;
+        },
+
+        apply: function() {
+          // Propagate target and duration to child animations first.
+          this.durationChanged();
+          this.targetChanged();
+          this.doOnChildren(function(c) {
+            c.apply();
+          });
+          return this.super();
+        },
+
+        get childAnimationElements() {
+          var list = [];
+          this.doOnChildren(function(c) {
+            if (c.makeAnimation) {
+              list.push(c);
+            }
+          });
+          return list;
+        },
+
+        get childAnimations() {
+          var list = [];
+          this.doOnChildren(function(c) {
+            if (c.animation) {
+              list.push(c.animation);
+            }
+          });
+          return list;
+        }
+      });
+
+    })();
+