[WPE] Add a MiniBrowser and use it to run WebDriver tests

[WPE] Add a MiniBrowser and use it to run WebDriver tests
https://bugs.webkit.org/show_bug.cgi?id=186345

Reviewed by Žan Doberšek.

.:

Add an option to enable building the MiniBrowser.

* Source/cmake/FindWaylandProtocols.cmake: Added.
* Source/cmake/OptionsWPE.cmake:

Source/WebDriver:

Use MiniBrowser instead of dyz as the default WebDriver browser for WPE.

* wpe/WebDriverServiceWPE.cpp:
(WebDriver::WebDriverService::platformParseCapabilities const):

Tools:

Most of the code is based on dyz and gtk MiniBrowser. This patch adds a new internal library WPEToolingBackends,
including the headless view backend and a new window backend to be used by the MiniBrowser. MiniBrowser can also
run in headless mode, by using the headless backend instead of the window one, which will allow us to run the
WebDriver tests in the bots.

* CMakeLists.txt:
* MiniBrowser/wpe/CMakeLists.txt: Added.
* MiniBrowser/wpe/main.cpp: Added.
(automationStartedCallback):
(createViewBackend):
(main):
* Scripts/run-minibrowser: Remove WPE specific code.
* Scripts/run-webdriver-tests: Add headless display-server option.
* Scripts/webkitdirs.pm:
(launcherName): Remove WPE specific code.
* Scripts/webkitpy/webdriver_tests/webdriver_driver_wpe.py:
(WebDriverWPE.browser_name): Return MiniBrowser.
(WebDriverWPE.browser_path): Return the path to the MiniBrowser in build dir.
(WebDriverWPE.browser_args): Add --headless when running in headless mode.
(WebDriverWPE.capabilities): Use the full browser path.
* Scripts/webkitpy/webdriver_tests/webdriver_test_runner_selenium.py:
(WebDriverTestRunnerSelenium.collect_tests): Fix early return value.
* TestWebKitAPI/PlatformWPE.cmake: Use WPEToolingBackends instead of HeadlessViewBackend.
* TestWebKitAPI/PlatformWebView.h: Ditto.
* TestWebKitAPI/glib/PlatformWPE.cmake: Ditto
* TestWebKitAPI/glib/WebKitGLib/TestMain.h:
(Test::createWebViewBackend): Ditto.
* TestWebKitAPI/wpe/PlatformWebViewWPE.cpp:
(TestWebKitAPI::PlatformWebView::initialize): Ditto.
* WebKitTestRunner/PlatformWPE.cmake: Ditto.
* WebKitTestRunner/PlatformWebView.h: Ditto.
* WebKitTestRunner/wpe/PlatformWebViewWPE.cpp:
(WTR::PlatformWebView::PlatformWebView): Ditto.
* wpe/HeadlessViewBackend/CMakeLists.txt: Removed.
* wpe/backends/CMakeLists.txt: Added.
* wpe/backends/HeadlessViewBackend.cpp: Renamed from Tools/wpe/HeadlessViewBackend/HeadlessViewBackend.cpp.
(WPEToolingBackends::getEGLDisplay):
(WPEToolingBackends::HeadlessViewBackend::HeadlessViewBackend):
(WPEToolingBackends::HeadlessViewBackend::~HeadlessViewBackend):
(WPEToolingBackends::HeadlessViewBackend::createSnapshot):
(WPEToolingBackends::HeadlessViewBackend::performUpdate):
(WPEToolingBackends::HeadlessViewBackend::displayBuffer):
* wpe/backends/HeadlessViewBackend.h: Renamed from Tools/wpe/HeadlessViewBackend/HeadlessViewBackend.h.
* wpe/backends/ViewBackend.cpp: Added.
(WPEToolingBackends::ViewBackend::ViewBackend):
(WPEToolingBackends::ViewBackend::~ViewBackend):
(WPEToolingBackends::ViewBackend::initialize):
(WPEToolingBackends::ViewBackend::setInputClient):
(WPEToolingBackends::ViewBackend::backend const):
(WPEToolingBackends::ViewBackend::dispatchInputPointerEvent):
(WPEToolingBackends::ViewBackend::dispatchInputAxisEvent):
(WPEToolingBackends::ViewBackend::dispatchInputKeyboardEvent):
* wpe/backends/ViewBackend.h: Added.
* wpe/backends/WindowViewBackend.cpp: Added.
(WPEToolingBackends::WindowViewBackend::WindowViewBackend):
(WPEToolingBackends::WindowViewBackend::~WindowViewBackend):
(WPEToolingBackends::WindowViewBackend::displayBuffer):
(WPEToolingBackends::WindowViewBackend::handleKeyEvent):
* wpe/backends/WindowViewBackend.h: Added.
* wpe/jhbuild.modules: Remove dyz and add wayland-protocols.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@232670 268f45cc-cd09-0410-ab3c-d52691b4dbfc