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

third_party/WebKit/Source/devtools/front_end/persistence/FileSystemWorkspaceBinding.js

 /*
  * Copyright (C) 2013 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 132 matching lines @@
     var fileSystem = /** @type {!Workspace.IsolatedFileSystem} */ (event.data);
     var boundFileSystem = this._boundFileSystems.get(fileSystem.path());
     boundFileSystem.dispose();
     this._boundFileSystems.remove(fileSystem.path());
   }
 
   /**
    * @param {!Common.Event} event
    */
   _fileSystemFilesChanged(event) {
-    var paths = /** @type {!Array<string>} */ (event.data);
-    for (var path of paths) {
-      for (var key of this._boundFileSystems.keys()) {
-        if (!path.startsWith(key))
-          continue;
-        this._boundFileSystems.get(key)._fileChanged(path);
+    var paths = /** @type {!Workspace.IsolatedFileSystemManager.FilesChangedData} */ (event.data);
+    forEachFile.call(this, paths.changed, (path, fileSystem) => fileSystem._fileChanged(path));
+    forEachFile.call(this, paths.added, (path, fileSystem) => fileSystem._fileChanged(path));
+    forEachFile.call(this, paths.removed, (path, fileSystem) => fileSystem.removeUISourceCode(path));
+
+    /**
+     * @param {!Array<string>} filePaths
+     * @param {function(string, !Persistence.FileSystemWorkspaceBinding.FileSystem)} callback
+     * @this {Persistence.FileSystemWorkspaceBinding}
+     */
+    function forEachFile(filePaths, callback) {
+      for (var filePath of filePaths) {
+        for (var fileSystemPath of this._boundFileSystems.keys()) {
+          if (!filePath.startsWith(fileSystemPath))
+            continue;
+          callback(filePath, this._boundFileSystems.get(fileSystemPath));
+        }
       }
     }
   }
 
   dispose() {
     Common.EventTarget.removeEventListeners(this._eventListeners);
     for (var fileSystem of this._boundFileSystems.values()) {
       fileSystem.dispose();
       this._boundFileSystems.remove(fileSystem._fileSystem.path());
     }
@@ skipping 402 matching lines @@
     uiSourceCode[Persistence.FileSystemWorkspaceBinding._metadata] = null;
     uiSourceCode.checkContentUpdated();
   }
 
   dispose() {
     this.removeProject();
   }
 };
 
 Persistence.FileSystemWorkspaceBinding._metadata = Symbol('FileSystemWorkspaceBinding.Metadata');