reland r151588 (remove unsupported run-webkit-tests flags)

Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py

Index: Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py
diff --git a/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py b/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py
index 86fc2f6c784c4b71ac0f7dc4f52e0e1a24e2d6e0..d10a4e6394229995eed7cca751f2061af3f39bbc 100644
--- a/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py
+++ b/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py
@@ -109,22 +109,6 @@ def parse_args(args):
             help="Run Android layout tests on these devices."),
     ]))
 
-    option_group_definitions.append(("WebKit Options", [
-        optparse.make_option("--gc-between-tests", action="store_true", default=False,
-            help="Force garbage collection between each test"),
-        optparse.make_option("--complex-text", action="store_true", default=False,
-            help="Use the complex text code path for all text (Mac OS X and Windows only)"),
-        optparse.make_option("-l", "--leaks", action="store_true", default=False,
-            help="Enable leaks checking (Mac OS X only)"),
-        optparse.make_option("-g", "--guard-malloc", action="store_true", default=False,
-            help="Enable Guard Malloc (Mac OS X only)"),
-        optparse.make_option("--threaded", action="store_true", default=False,
-            help="Run a concurrent JavaScript thread with each test"),
-        # FIXME: We should merge this w/ --build-directory and only have one flag.
-        optparse.make_option("--root", action="store",
-            help="Path to a directory containing the executables needed to run tests."),
-    ]))
-
     option_group_definitions.append(("Results Options", [
         optparse.make_option("-p", "--pixel", "--pixel-tests", action="store_true",
             dest="pixel_tests", help="Enable pixel-to-pixel PNG comparisons"),