DevTools: "Delete File" in navigator should actually delete a file

third_party/WebKit/LayoutTests/http/tests/inspector/isolated-filesystem-test.js

 var initialize_IsolatedFileSystemTest = function() {
 
 InspectorFrontendHost.isolatedFileSystem = function(name)
 {
     return InspectorTest.TestFileSystem._instances[name];
 }
 
 InspectorTest.TestFileSystem = function(fileSystemPath)
 {
     this.root = new InspectorTest.TestFileSystem.Entry(this, "", true, null);
     this.fileSystemPath = fileSystemPath;
 }
 
 InspectorTest.TestFileSystem._instances = {};
 
 InspectorTest.TestFileSystem.prototype = {
+    dumpAsText: function() {
+        var result = [];
+        dfs(this.root, '');
+        result[0] = this.fileSystemPath;
+        return result.join('\n');
+
+        function dfs(node, indent) {
+            result.push(indent + node.name);
+            var newIndent = indent + '    ';
+            for (var child of node._children)
+                dfs(child, newIndent);
+        }
+    },
+
     reportCreated: function(callback)
     {
         var fileSystemPath = this.fileSystemPath;
         InspectorTest.TestFileSystem._instances[this.fileSystemPath] = this;
         InspectorFrontendHost.events.dispatchEventToListeners(InspectorFrontendHostAPI.Events.FileSystemAdded, {
             fileSystem: { fileSystemPath: this.fileSystemPath,
                           fileSystemName: this.fileSystemPath }
         });
 
         Workspace.isolatedFileSystemManager.addEventListener(Workspace.IsolatedFileSystemManager.Events.FileSystemAdded, created);
@@ skipping 213 matching lines @@
     truncate: function(num)
     {
         this._entry._timestamp += this._modificationTimesDelta;
         this._entry.content = this._entry.content.slice(0, num);
         if (this.onwriteend)
             this.onwriteend();
     }
 }
 
 };