Automated Autofill testing library + extension

components/test/data/autofill/automated_integration/action_recorder_extension/README.md

Index: components/test/data/autofill/automated_integration/action_recorder_extension/README.md
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+# Action Recorder Extension
+
+> An extension that generates Python scripts which automate integration testing
+> through Chrome. It was primarily designed for testing Autofill but is easily
+> portable to other uses.
+
+## Usage
+
+1.  Install the extension into Chrome as an unpacked extension on
+    chrome://extensions (don't forget to turn on "Developer mode" on this page).
+2.  Navigate to the desired start page or use the extension's dropdown menu
+    (next to the omnibox) to go to the next "top 100" site.
+3.  Use the dropdown menu or right-click context menu to start action recording.
+4.  Proceed to click on page elements to navigate through the desired sequence
+    of pages.
+5.  To validate the input field types simply right-click on the inputs and
+    select the appropriate 'Input Field Type'. Before performing any other
+    actions, right click on the page and select 'Validate Field Types'.
+6.  Select 'Stop & Copy', at which point the test code will be in your
+    clipboard.
+7.  Paste the generated code into the autofill_top_100.py file
+    (components/test/data/password_manager/form_classification_tests).
+8.  Clean up as necessary.
+
+You might also visit arbitrary sites. Just go to a site and start recording
+there.