DevTools: Remove files in the navigator when they are deleted externally

third_party/WebKit/Source/devtools/front_end/devtools_compatibility.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.
 /* eslint-disable indent */
 (function(window) {
 
   // DevToolsAPI ----------------------------------------------------------------
 
   /**
    * @unrestricted
@@ skipping 158 matching lines @@
 
     /**
      * @param {!{fileSystemName: string, rootURL: string, fileSystemPath: string}} fileSystem
      */
     fileSystemAdded(fileSystem) {
       this._dispatchOnInspectorFrontendAPI('fileSystemAdded', ['', fileSystem]);
     }
 
     /**
      * @param {!Array<string>} changedPaths
+     * @param {!Array<string>} addedPaths
+     * @param {!Array<string>} removedPaths
      */
-    fileSystemFilesChanged(changedPaths) {
-      this._dispatchOnInspectorFrontendAPI('fileSystemFilesChanged', [changedPaths]);
+    fileSystemFilesChangedAddedRemoved(changedPaths, addedPaths, removedPaths) {
+      // Support for legacy front-ends (<M58)
+      if (window['InspectorFrontendAPI'] && window['InspectorFrontendAPI']['fileSystemFilesChanged']) {
+        this._dispatchOnInspectorFrontendAPI(
+            'fileSystemFilesChanged', [changedPaths.concat(addedPaths).concat(removedPaths)]);

[lushnikov, 2017/01/25 02:23:10]

nit: maybe use .pushAll to avoid multiple array copying?

[einbinder, 2017/01/25 19:53:12]

I don't think devtools_compatibility should rely on platform. I'm not really
worried about the performance of the legacy path.

+      } else {
+        this._dispatchOnInspectorFrontendAPI(
+            'fileSystemFilesChangedAddedRemoved', [changedPaths, addedPaths, removedPaths]);
+      }
     }
 
     /**
      * @param {number} requestId
      * @param {string} fileSystemPath
      * @param {number} totalWork
      */
     indexingTotalWorkCalculated(requestId, fileSystemPath, totalWork) {
       this._dispatchOnInspectorFrontendAPI('indexingTotalWorkCalculated', [requestId, fileSystemPath, totalWork]);
     }
@@ skipping 1053 matching lines @@
      * @return {boolean}
      */
     DOMTokenList.prototype.toggle = function(token, force) {
       if (arguments.length === 1)
         force = !this.contains(token);
       return this.__originalDOMTokenListToggle(token, !!force);
     };
   }
 
 })(window);