DevTools: WI.Throttler goes promisified.

Source/devtools/front_end/bindings/StylesSourceMapping.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 355 matching lines @@
      * @param {!WebInspector.Event} event
      */
     _workingCopyChanged: function(event)
     {
         if (this._isAddingRevision)
             return;
 
         this._commitThrottler.schedule(this._commitIncrementalEdit.bind(this), false);
     },
 
-    /**
-     * @param {!WebInspector.Throttler.FinishCallback} finishCallback
-     */
-    _commitIncrementalEdit: function(finishCallback)
+    _commitIncrementalEdit: function()
     {
-        this._mapping._setStyleContent(this._uiSourceCode, this._uiSourceCode.workingCopy(), this._isMajorChangePending)
+        var promise = this._mapping._setStyleContent(this._uiSourceCode, this._uiSourceCode.workingCopy(), this._isMajorChangePending)
             .then(this._styleContentSet.bind(this))
-            .then(finishCallback)
-            .catch(/** @type {function()} */(finishCallback));
         this._isMajorChangePending = false;
+        return promise;
     },
 
     /**
      * @param {?string} error
      */
     _styleContentSet: function(error)
     {
         if (error)
             WebInspector.console.error(error);
     },
 
     /**
      * @param {string} content
      */
     addRevision: function(content)
     {
         this._isAddingRevision = true;
         this._uiSourceCode.addRevision(content);
         delete this._isAddingRevision;
     },
 
     dispose: function()
     {
         this._uiSourceCode.removeEventListener(WebInspector.UISourceCode.Events.WorkingCopyCommitted, this._workingCopyCommitted, this);
         this._uiSourceCode.removeEventListener(WebInspector.UISourceCode.Events.WorkingCopyChanged, this._workingCopyChanged, this);
     }
 }