Automated Autofill testing library + extension

components/test/data/autofill/automated_integration/action_recorder_extension/background/indented_string_factory.js

Index: components/test/data/autofill/automated_integration/action_recorder_extension/background/indented_string_factory.js
diff --git a/components/test/data/autofill/automated_integration/action_recorder_extension/background/indented_string_factory.js b/components/test/data/autofill/automated_integration/action_recorder_extension/background/indented_string_factory.js
new file mode 100644
index 0000000000000000000000000000000000000000..f41b20e32169962d9e8f9dd21167cd31261ae7af
--- /dev/null
+++ b/components/test/data/autofill/automated_integration/action_recorder_extension/background/indented_string_factory.js
@@ -0,0 +1,60 @@
+// 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.
+
+'use strict';
+
+class IndentedTextFactory {
+  /**
+   * Create an intented text factory, optionally with initial indentation level.
+   * @param {Number} indent The initial number of indents (must be natural)
+   * @param {String} spaces (Optional) Spacing to use for an indent
+   */
+  constructor(indent, spaces) {
+    this._indent = indent || 0;
+    this._spaces = spaces || '  ';
+    this._contents = '';
+  }
+
+  /**
+   * Increase indent level.
+   * @param {Number} steps The number of indents to increase by
+   */
+  increase(steps) { this._indent += (steps || 1); }
+
+  /**
+   * Decrease indent level.
+   * @param {Number} steps The number of indents to decrease by
+   */
+  decrease(steps) { this._indent = (this._indent - (steps || 1)) || 0; }
+
+  /**
+   * Add a single line of text to the internal content.
+   * @param {String} text A single line of text
+   */
+  addLine(text) {
+    let indents = '';
+
+    // Add indentation
+    for (let i = 0; i < this._indent; i++) {
+      indents += this._spaces;
+    }
+
+    this._contents += `${indents}${text}\n`;
+  }
+
+  /**
+   * Add a multiline string of text to the internal content.
+   * Each line will receive the current level of indentation.
+   * @param {String} multilineText A multi-line string of text
+   */
+  addLines(multilineText) {
+    const lines = multilineText.split('\n');
+
+    for (let i = 0; i < lines.length; i++) {
+      this.addLine(lines[i]);
+    }
+  }
+
+  toString() { return this._contents; }
+}