DevTools: teach automapping to deal with network resources with file:// urls

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

 // Copyright 2016 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.
 /**
  * @unrestricted
  */
 WebInspector.Automapping = class {
   /**
    * @param {!WebInspector.Workspace} workspace
    * @param {function(!WebInspector.PersistenceBinding)} onBindingCreated
@@ skipping 180 matching lines @@
         this._activeFoldersIndex.removeFolder(projectFolder);
     }
     this._onBindingRemoved.call(null, binding);
   }
 
   /**
    * @param {!WebInspector.UISourceCode} networkSourceCode
    * @return {!Promise<?WebInspector.PersistenceBinding>}
    */
   _createBinding(networkSourceCode) {
+    if (networkSourceCode.url().startsWith('file://')) {
+      var fileSourceCode = this._fileSystemUISourceCodes.get(networkSourceCode.url());
+      var binding = fileSourceCode ? new WebInspector.PersistenceBinding(networkSourceCode, fileSourceCode, false) : null;
+      return Promise.resolve(binding);
+    }
+
     var networkPath = WebInspector.ParsedURL.extractPath(networkSourceCode.url());
     if (networkPath === null)
       return Promise.resolve(/** @type {?WebInspector.PersistenceBinding} */ (null));
 
     if (networkPath.endsWith('/'))
       networkPath += 'index.html';
     var similarFiles = this._filesIndex.similarFiles(networkPath).map(path => this._fileSystemUISourceCodes.get(path));
     if (!similarFiles.length)
       return Promise.resolve(/** @type {?WebInspector.PersistenceBinding} */ (null));
 
@@ skipping 181 matching lines @@
   /**
    * @param {string} path
    * @return {string}
    */
   closestParentFolder(path) {
     var encodedPath = this._encoder.encode(path);
     var commonPrefix = this._index.longestPrefix(encodedPath, true);
     return this._encoder.decode(commonPrefix);
   }
 };