DevTools: [SASS] poll CSS for 30 seconds instead of 5 seconds.

Source/devtools/front_end/bindings/SASSSourceMapping.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 19 matching lines @@
 
 /**
  * @constructor
  * @implements {WebInspector.CSSSourceMapping}
  * @param {!WebInspector.CSSStyleModel} cssModel
  * @param {!WebInspector.Workspace} workspace
  * @param {!WebInspector.NetworkWorkspaceBinding} networkWorkspaceBinding
  */
 WebInspector.SASSSourceMapping = function(cssModel, workspace, networkWorkspaceBinding)
 {
-    this.pollPeriodMs = 5000;
+    this.pollPeriodMs = 30 * 1000;
     this.pollIntervalMs = 200;
 
     this._cssModel = cssModel;
     this._workspace = workspace;
     this._networkWorkspaceBinding = networkWorkspaceBinding;
     this._addingRevisionCounter = 0;
     this._reset();
     WebInspector.fileManager.addEventListener(WebInspector.FileManager.EventTypes.SavedURL, this._fileSaveFinished, this);
     WebInspector.settings.cssSourceMapsEnabled.addChangeListener(this._toggleSourceMapSupport, this)
     this._cssModel.addEventListener(WebInspector.CSSStyleModel.Events.StyleSheetChanged, this._styleSheetChanged, this);
@@ skipping 163 matching lines @@
      * @param {string} sassURL
      * @param {boolean} stopPolling
      */
     _pollCallback: function(cssURL, sassURL, stopPolling)
     {
         var now;
         var pollData = this._pollDataForSASSURL[sassURL];
         if (!pollData)
             return;
 
-        if (stopPolling || (now = new Date().getTime()) > pollData.deadlineMs) {
-            delete pollData.dataByURL[cssURL];
-            if (!Object.keys(pollData.dataByURL).length)
-                delete this._pollDataForSASSURL[sassURL];
+        if (stopPolling) {
+            this._stopPolling(cssURL, sassURL);
+            return;
+        }
+
+        if ((now = new Date().getTime()) > pollData.deadlineMs) {
+            WebInspector.console.warn(WebInspector.UIString("%s hasn't been updated in %d seconds.", cssURL, this.pollPeriodMs / 1000));
+            this._stopPolling(cssURL, sassURL);
             return;
         }
         var nextPoll = this.pollIntervalMs + pollData.dataByURL[cssURL].previousPoll;
         var remainingTimeoutMs = Math.max(0, nextPoll - now);
         pollData.dataByURL[cssURL].previousPoll = now + remainingTimeoutMs;
         pollData.dataByURL[cssURL].timer = setTimeout(this._reloadCSS.bind(this, cssURL, sassURL, this._pollCallback.bind(this)), remainingTimeoutMs);
     },
 
     /**
      * @param {string} cssURL
      * @param {string} sassURL
+     */
+    _stopPolling: function(cssURL, sassURL)
+    {
+        var pollData = this._pollDataForSASSURL[sassURL];
+        delete pollData.dataByURL[cssURL];
+        if (!Object.keys(pollData.dataByURL).length)
+            delete this._pollDataForSASSURL[sassURL];
+    },
+
+    /**
+     * @param {string} cssURL
+     * @param {string} sassURL
      * @param {function(string, string, boolean)} callback
      */
     _reloadCSS: function(cssURL, sassURL, callback)
     {
         var cssUISourceCode = this._workspace.uiSourceCodeForURL(cssURL);
         if (!cssUISourceCode) {
             WebInspector.console.warn(WebInspector.UIString("%s resource missing. Please reload the page.", cssURL));
             callback(cssURL, sassURL, true);
             return;
         }
@@ skipping 376 matching lines @@
         this._cssURLsForSASSURL = {};
         /** @type {!Object.<string, !Array.<function(?WebInspector.SourceMap)>>} */
         this._pendingSourceMapLoadingCallbacks = {};
         /** @type {!Object.<string, !{deadlineMs: number, dataByURL: !Object.<string, !{timer: number, previousPoll: number}>}>} */
         this._pollDataForSASSURL = {};
         /** @type {!Object.<string, !WebInspector.SourceMap>} */
         this._sourceMapByURL = {};
         this._sourceMapByStyleSheetURL = {};
     }
 }