DevTools: Throttle file system refreshes on focus.

Source/devtools/front_end/sdk/Workspace.js

 /*
  * Copyright (C) 2012 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 81 matching lines @@
 
     /**
      * @param {string} path
      * @param {string} newName
      * @param {function(boolean, string=, string=, string=, !WebInspector.ResourceType=)} callback
      */
     rename: function(path, newName, callback) { },
 
     /**
      * @param {string} path
+     * @param {function()=} callback
      */
-    refresh: function(path) { },
+    refresh: function(path, callback) { },
 
     /**
      * @param {string} path
      */
     excludeFolder: function(path) { },
 
     /**
      * @param {string} path
      * @param {?string} name
      * @param {string} content
@@ skipping 317 matching lines @@
             var oldPath = uiSourceCode.path();
             var newPath = uiSourceCode.parentPath() ? uiSourceCode.parentPath() + "/" + newName : newName;
             this._uiSourceCodesMap[newPath] = this._uiSourceCodesMap[oldPath];
             delete this._uiSourceCodesMap[oldPath];
             callback(true, newName, newURL, newOriginURL, newContentType);
         }
     },
 
     /**
      * @param {string} path
+     * @param {function()=} callback
      */
-    refresh: function(path)
+    refresh: function(path, callback)
     {
-        this._projectDelegate.refresh(path);
+        this._projectDelegate.refresh(path, callback);
     },
 
     /**
      * @param {string} path
      */
     excludeFolder: function(path)
     {
         this._projectDelegate.excludeFolder(path);
         var uiSourceCodes = this._uiSourceCodesList.slice();
         for (var i = 0; i < uiSourceCodes.length; ++i) {
@@ skipping 315 matching lines @@
         return this._hasResourceContentTrackingExtensions;
     },
 
     __proto__: WebInspector.Object.prototype
 }
 
 /**
  * @type {!WebInspector.Workspace}
  */
 WebInspector.workspace;