DevTools: history input should overwrite last history entry with user-input

Source/devtools/front_end/ui/HistoryInput.js

 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @extends {HTMLInputElement}
  */
 WebInspector.HistoryInput = function()
 {
 }
 
 /**
  * @return {!WebInspector.HistoryInput}
  */
 WebInspector.HistoryInput.create = function()
 {
     if (!WebInspector.HistoryInput._constructor)
         WebInspector.HistoryInput._constructor = registerCustomElement("input", "history-input", WebInspector.HistoryInput.prototype);
 
     return /** @type {!WebInspector.HistoryInput} */(new WebInspector.HistoryInput._constructor());
 }
 
 WebInspector.HistoryInput.prototype = {
     createdCallback: function()
     {
         this._history = [""];
         this._historyPosition = 0;
         this.addEventListener("keydown", this._onKeyDown.bind(this), false);
+        this.addEventListener("input", this._onInput.bind(this), false);
     },
 
     /**
+     * @param {!Event} event
+     */
+    _onInput: function(event)
+    {
+        if (this._history.length === this._historyPosition + 1)
+            this._history[this._history.length - 1] = this.value;
+    },
+
+    /**
      * @param {!Event} event
      */
     _onKeyDown: function(event)
     {
         if (event.keyCode === WebInspector.KeyboardShortcut.Keys.Up.code) {
             this._historyPosition = Math.max(this._historyPosition - 1, 0);
             this.value = this._history[this._historyPosition];
             this.dispatchEvent(createEvent("input", true, true));
             event.consume(true);
         } else if (event.keyCode === WebInspector.KeyboardShortcut.Keys.Down.code) {
@@ skipping 11 matching lines @@
         if (this._history.length > 1 && this._history[this._history.length - 2] === this.value)
             return;
         this._history[this._history.length - 1] = this.value;
         this._historyPosition = this._history.length - 1;
         this._history.push("");
     },
 
     __proto__: HTMLInputElement.prototype
 }