Update Polymer from 1.2.1 -> 1.2.3

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

 /*
 `<iron-input>` adds two-way binding and custom validators using `Polymer.IronValidatorBehavior`
 to `<input>`.
 
 ### Two-way binding
 
 By default you can only get notified of changes to an `input`'s `value` due to user input:
 
     <input value="{{myValue::input}}">
 
@@ skipping 47 matching lines @@
        * set, or the `type` attribute (only supported for `type=number`).
        */
       preventInvalidInput: {
         type: Boolean
       },
 
       /**
        * Regular expression to match valid input characters.
        */
       allowedPattern: {
-        type: String
+        type: String,
+        observer: "_allowedPatternChanged"
       },
 
       _previousValidInput: {
         type: String,
         value: ''
       },
 
       _patternAlreadyChecked: {
         type: Boolean,
         value: false
@@ skipping 30 matching lines @@
      * @suppress {checkTypes}
      */
     _bindValueChanged: function() {
       if (this.value !== this.bindValue) {
         this.value = !(this.bindValue || this.bindValue === 0) ? '' : this.bindValue;
       }
       // manually notify because we don't want to notify until after setting value
       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.
       if (this.preventInvalidInput && !this._patternAlreadyChecked) {
         var valid = this._checkPatternValidity();
         if (!valid) {
           this.value = this._previousValidInput;
         }
       }
 
@@ skipping 91 matching lines @@
       this.fire('iron-input-validate');
       return valid;
     }
 
   });
 
   /*
   The `iron-input-validate` event is fired whenever `validate()` is called.
   @event iron-input-validate
   */