Bug 278731 – [GTK][WebDriver] Update Selenium tests after fixing Selenium upstream WebKitGTK support code

• Status: NEW
• Component: WebDriver

[Lauro Moura]

276878@main /  updated the imported selenium copy after some fixes Selenium upstream regarding WPE. Similar changes will be needed for WebKitGTK in Selenium itself.

For example, after updating `Tools/Scripts/webkitpy/webdriver_tests/webdriver_driver_gtk.py::selenium_name()` to match the new lowercase scheme, running selenium tests with GTK results in:

./Tools/Scripts/run-webdriver-tests --release --gtk "imported/selenium/py/test/selenium/webdriver/common/api_example_tests.py::test_find_element_by_xpath"

```
...
ERROR ../../../../app/webkit/WebDriverTests/imported/selenium/py/test/selenium/webdriver/common/api_example_tests.py::test_find_element_by_xpath[webkitgtk] - AttributeError: module 'selenium.webdriver' has no attribute 'Webkitgtk'
...
```