Revert of Polymer: Remove unused paper-dialog and paper-dialog-behavior.

third_party/polymer/v1_0/components-chromium/paper-dialog/paper-dialog-extracted.js

Index: third_party/polymer/v1_0/components-chromium/paper-dialog/paper-dialog-extracted.js
diff --git a/third_party/polymer/v1_0/components-chromium/paper-dialog/paper-dialog-extracted.js b/third_party/polymer/v1_0/components-chromium/paper-dialog/paper-dialog-extracted.js
new file mode 100644
index 0000000000000000000000000000000000000000..570cf42f25510d8726f85cd9d46db9b85172d740
--- /dev/null
+++ b/third_party/polymer/v1_0/components-chromium/paper-dialog/paper-dialog-extracted.js
@@ -0,0 +1,36 @@
+(function() {
+
+  Polymer({
+
+    is: 'paper-dialog',
+
+    behaviors: [
+      Polymer.PaperDialogBehavior,
+      Polymer.NeonAnimationRunnerBehavior
+    ],
+
+    listeners: {
+      'neon-animation-finish': '_onNeonAnimationFinish'
+    },
+
+    _renderOpened: function() {
+      this.cancelAnimation();
+      this.playAnimation('entry');
+    },
+
+    _renderClosed: function() {
+      this.cancelAnimation();
+      this.playAnimation('exit');
+    },
+
+    _onNeonAnimationFinish: function() {
+      if (this.opened) {
+        this._finishRenderOpened();
+      } else {
+        this._finishRenderClosed();
+      }
+    }
+
+  });
+
+})();