[DevTools] Remove Console.messagesCleared event.

third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 64 matching lines @@
      * @param {!WebInspector.ConsoleMessage} msg
      */
     addMessage: function(msg)
     {
         if (this._isBlacklisted(msg))
             return;
 
         if (msg.source === WebInspector.ConsoleMessage.MessageSource.Worker && msg.target().workerManager && msg.target().workerManager.targetByWorkerId(msg.workerId))
             return;
 
+        if (msg.source === WebInspector.ConsoleMessage.MessageSource.ConsoleAPI && msg.type === WebInspector.ConsoleMessage.MessageType.Clear)
+            this.clear();
+
         if (msg.level === WebInspector.ConsoleMessage.MessageLevel.RevokedError && msg._revokedExceptionId) {
             var exceptionMessage = this._messageByExceptionId.get(msg._revokedExceptionId);
             if (!exceptionMessage)
                 return;
             this._errors--;
             this._revokedErrors++;
             exceptionMessage.level = WebInspector.ConsoleMessage.MessageLevel.RevokedError;
             this.dispatchEventToListeners(WebInspector.ConsoleModel.Events.MessageUpdated, exceptionMessage);
             return;
         }
@@ skipping 43 matching lines @@
      * @return {!Array.<!WebInspector.ConsoleMessage>}
      */
     messages: function()
     {
         return this._messages;
     },
 
     requestClearMessages: function()
     {
         this._consoleAgent.clearMessages();
-        this._messagesCleared();
+        this.clear();
     },
 
-    _messagesCleared: function()
+    clear: function()
     {
         this._messages = [];
         this._messageByExceptionId.clear();
         this._errors = 0;
         this._revokedErrors = 0;
         this._warnings = 0;
         this.dispatchEventToListeners(WebInspector.ConsoleModel.Events.ConsoleCleared);
     },
 
     /**
@@ skipping 394 matching lines @@
      */
     messageRepeatCountUpdated: function(count)
     {
     },
 
     /**
      * @override
      */
     messagesCleared: function()
     {
-        if (!WebInspector.moduleSetting("preserveConsoleLog").get())
-            this._console._messagesCleared();
     }
 }
 
 /**
  * @constructor
  * @extends {WebInspector.Object}
  * @implements {WebInspector.TargetManager.Observer}
  */
 WebInspector.MultitargetConsoleModel = function()
 {
@@ skipping 69 matching lines @@
         this.dispatchEventToListeners(WebInspector.ConsoleModel.Events.CommandEvaluated, event.data);
     },
 
     __proto__: WebInspector.Object.prototype
 }
 
 /**
  * @type {!WebInspector.MultitargetConsoleModel}
  */
 WebInspector.multitargetConsoleModel;