DevTools: [ux regression] There is no way to clear console history.

third_party/WebKit/Source/devtools/front_end/console/ConsoleView.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 146 matching lines @@
 
 WebInspector.ConsoleView.prototype = {
     /**
      * @return {!WebInspector.SearchableView}
      */
     searchableView: function()
     {
         return this._searchableView;
     },
 
+    _clearHistory: function()
+    {
+        this._consoleHistorySetting.set([]);
+        this._prompt.setHistoryData([]);
+    },
+
     /**
      * @param {!WebInspector.Event} event
      */
     _onMainFrameNavigated: function(event)
     {
         var frame = /** @type {!WebInspector.ResourceTreeFrame} */(event.data);
         WebInspector.console.log(WebInspector.UIString("Navigated to %s", frame.url));
     },
 
     _initConsoleMessages: function()
@@ skipping 394 matching lines @@
         for (var url in this._filter.messageURLFilters) {
             filterSubMenu.appendCheckboxItem(String.sprintf("%s (%d)", new WebInspector.ParsedURL(url).displayName, this._urlToMessageCount[url]), this._filter.removeMessageURLFilter.bind(this._filter, url), true);
             hasFilters = true;
         }
 
         filterSubMenu.setEnabled(hasFilters || (consoleMessage && consoleMessage.url));
         unhideAll.setEnabled(hasFilters);
 
         contextMenu.appendSeparator();
         contextMenu.appendAction("console.clear");
+        contextMenu.appendAction("console.clear.history");
         contextMenu.appendItem(WebInspector.UIString("Save as..."), this._saveConsole.bind(this));
 
         var request = consoleMessage ? consoleMessage.request : null;
         if (request && request.resourceType() === WebInspector.resourceTypes.XHR) {
             contextMenu.appendSeparator();
             contextMenu.appendItem(WebInspector.UIString("Replay XHR"), request.replayXHR.bind(request));
         }
 
         contextMenu.show();
     },
@@ skipping 677 matching lines @@
     /**
      * @return {?WebInspector.ConsoleGroup}
      */
     parentGroup: function()
     {
         return this._parentGroup || this;
     },
 }
 
 /**
+ * @return {!WebInspector.ConsoleView}
+ */
+WebInspector.ConsoleView.instance = function()
+{
+    if (!WebInspector.ConsoleView._instance)
+        WebInspector.ConsoleView._instance = new WebInspector.ConsoleView();
+    return WebInspector.ConsoleView._instance;
+}
+
+/**
  * @constructor
  * @implements {WebInspector.ActionDelegate}
  */
 WebInspector.ConsoleView.ActionDelegate = function()
 {
 }
 
 WebInspector.ConsoleView.ActionDelegate.prototype = {
     /**
      * @override
      * @param {!WebInspector.Context} context
      * @param {string} actionId
      * @return {boolean}
      */
     handleAction: function(context, actionId)
     {
         switch (actionId) {
         case "console.show":
             WebInspector.console.show();
             return true;
         case "console.clear":
             WebInspector.ConsoleModel.clearConsole();
             return true;
+        case "console.clear.history":
+            WebInspector.ConsoleView.instance()._clearHistory();
+            return true;
         }
         return false;
     }
 }
 
 /**
 * @typedef {{messageIndex: number, matchIndex: number}}
 */
 WebInspector.ConsoleView.RegexMatchRange;