Update Polymer from 1.2.1 -> 1.2.3

third_party/polymer/v1_0/components-chromium/iron-input/iron-input-extracted.js

Index: third_party/polymer/v1_0/components-chromium/iron-input/iron-input-extracted.js
diff --git a/third_party/polymer/v1_0/components-chromium/iron-input/iron-input-extracted.js b/third_party/polymer/v1_0/components-chromium/iron-input/iron-input-extracted.js
index c72907b6e3e00c1a91e41fe2582aaaacd6958778..802174224ce29a9f5b33797fcfcc169f8049a680 100644
--- a/third_party/polymer/v1_0/components-chromium/iron-input/iron-input-extracted.js
+++ b/third_party/polymer/v1_0/components-chromium/iron-input/iron-input-extracted.js
@@ -65,7 +65,8 @@ is separate from validation, and `allowed-pattern` does not affect how the input
        * Regular expression to match valid input characters.
        */
       allowedPattern: {
-        type: String
+        type: String,
+        observer: "_allowedPatternChanged"
       },
 
       _previousValidInput: {
@@ -116,6 +117,11 @@ is separate from validation, and `allowed-pattern` does not affect how the input
       this.fire('bind-value-changed', {value: this.bindValue});
     },
 
+    _allowedPatternChanged: function() {
+      // Force to prevent invalid input when an `allowed-pattern` is set
+      this.preventInvalidInput = this.allowedPattern ? true : false;
+    },
+
     _onInput: function() {
       // Need to validate each of the characters pasted if they haven't
       // been validated inside `_onKeypress` already.