DevTools: WI.Throttler goes promisified.

Source/devtools/front_end/emulation/MediaQueryInspector.js

 // Copyright 2014 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 {WebInspector.Widget}
  * @implements {WebInspector.TargetManager.Observer}
  */
 WebInspector.MediaQueryInspector = function()
@@ skipping 157 matching lines @@
         WebInspector.Revealer.reveal(location);
     },
 
     _scheduleMediaQueriesUpdate: function()
     {
         if (!this._enabled)
             return;
         this._mediaThrottler.schedule(this._refetchMediaQueries.bind(this));
     },
 
-    /**
-     * @param {!WebInspector.Throttler.FinishCallback} finishCallback
-     */
-    _refetchMediaQueries: function(finishCallback)
+    _refetchMediaQueries: function()
     {
-        if (!this._enabled || !this._cssModel) {
-            finishCallback();
-            return;
-        }
+        if (!this._enabled || !this._cssModel)
+            return Promise.resolve();
 
-        this._cssModel.mediaQueriesPromise()
+        return this._cssModel.mediaQueriesPromise()
             .then(this._rebuildMediaQueries.bind(this))
-            .then(finishCallback)
-            .catch(finishCallback);
     },
 
     /**
      * @param {!Array.<!WebInspector.MediaQueryInspector.MediaQueryUIModel>} models
      * @return {!Array.<!WebInspector.MediaQueryInspector.MediaQueryUIModel>}
      */
     _squashAdjacentEqual: function(models)
     {
         var filtered = [];
         for (var i = 0; i < models.length; ++i) {
@@ skipping 299 matching lines @@
     },
 
     /**
      * @return {boolean}
      */
     active: function()
     {
         return this._active;
     }
 }