[GTK] Use custom JavaScript instead of DBus to implement WebProcess tests

[GTK] Use custom JavaScript instead of DBus to implement WebProcess tests
https://bugs.webkit.org/show_bug.cgi?id=138834

Reviewed by Sergio Villar Senin.

It makes everyting simpler and the tests run faster too, since we
don't need to spawn the private bus and wait until the DBus name
is registered. The web extension registers a new JavaSCript class
with a status method to run the tests, similar to the DBus
method. In the UI process side, tests use webkit_web_view_run_java_script()
instead of sending a DBus message.

* TestWebKitAPI/Tests/WebKit2Gtk/CMakeLists.txt:
* TestWebKitAPI/Tests/WebKit2Gtk/DOMNodeFilterTest.cpp:
(WebKitDOMNodeFilterTest::create):
(WebKitDOMNodeFilterTest::testTreeWalker):
(WebKitDOMNodeFilterTest::testNodeIterator):
(WebKitDOMNodeFilterTest::webPageFromArgs): Deleted.
(WebKitDOMNodeFilterTest::runTest): Deleted.
* TestWebKitAPI/Tests/WebKit2Gtk/DOMNodeTest.cpp:
(WebKitDOMNodeTest::create):
(WebKitDOMNodeTest::testHierarchyNavigation):
(WebKitDOMNodeTest::testInsertion):
(WebKitDOMNodeTest::testTagNames):
(WebKitDOMNodeTest::webPageFromArgs): Deleted.
(WebKitDOMNodeTest::runTest): Deleted.
* TestWebKitAPI/Tests/WebKit2Gtk/DOMXPathNSResolverTest.cpp:
(WebKitDOMXPathNSResolverTest::create):
(WebKitDOMXPathNSResolverTest::testXPathNSResolverNative):
(WebKitDOMXPathNSResolverTest::testXPathNSResolverCustom):
(WebKitDOMXPathNSResolverTest::webPageFromArgs): Deleted.
(WebKitDOMXPathNSResolverTest::runTest): Deleted.
* TestWebKitAPI/Tests/WebKit2Gtk/FrameTest.cpp:
(WebKitFrameTest::create):
(WebKitFrameTest::testMainFrame):
(WebKitFrameTest::testURI):
(WebKitFrameTest::testJavaScriptContext):
(WebKitFrameTest::webPageFromArgs): Deleted.
(WebKitFrameTest::runTest): Deleted.
* TestWebKitAPI/Tests/WebKit2Gtk/TestDOMNode.cpp:
(testWebKitDOMNodeHierarchyNavigation):
(testWebKitDOMNodeInsertion):
(testWebKitDOMNodeTagNames):
(beforeAll):
(afterAll):
* TestWebKitAPI/Tests/WebKit2Gtk/TestDOMNodeFilter.cpp:
(runTest):
(beforeAll):
(afterAll):
* TestWebKitAPI/Tests/WebKit2Gtk/TestDOMXPathNSResolver.cpp:
(testWebKitDOMXPathNSResolverNative):
(testWebKitDOMXPathNSResolverCustom):
(beforeAll):
(afterAll):
(runTest): Deleted.
* TestWebKitAPI/Tests/WebKit2Gtk/TestFrame.cpp:
(webkitFrameTestRun):
(beforeAll):
(afterAll):
* TestWebKitAPI/Tests/WebKit2Gtk/WebProcessTest.cpp:
(testsMap):
(WebProcessTest::add):
(WebProcessTest::create):
(runTest):
(windowObjectClearedCallback):
(webkit_web_extension_initialize):
(methodCallCallback): Deleted.
(webkit_web_extension_initialize_with_user_data): Deleted.
* TestWebKitAPI/Tests/WebKit2Gtk/WebProcessTest.h:
* TestWebKitAPI/gtk/WebKit2Gtk/WebProcessTestRunner.cpp: Removed.
* TestWebKitAPI/gtk/WebKit2Gtk/WebProcessTestRunner.h: Removed.
* TestWebKitAPI/gtk/WebKit2Gtk/WebViewTest.cpp:
(WebViewTest::runWebProcessTest):
* TestWebKitAPI/gtk/WebKit2Gtk/WebViewTest.h:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@176563 268f45cc-cd09-0410-ab3c-d52691b4dbfc