Make MockExecutive behave more like MockExecutive2.

third_party/WebKit/Tools/Scripts/webkitpy/common/host_mock.py

Index: third_party/WebKit/Tools/Scripts/webkitpy/common/host_mock.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/common/host_mock.py b/third_party/WebKit/Tools/Scripts/webkitpy/common/host_mock.py
index 238fff70b15780ed236f36a2eb2e7d5dfdc5f022..9a62e2a619d28751d0a538fba35e53f53686629c 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/common/host_mock.py
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/common/host_mock.py
@@ -40,12 +40,19 @@ from webkitpy.layout_tests.port.test import add_unit_tests_to_mock_filesystem
 
 class MockHost(MockSystemHost):
 
-    def __init__(self, log_executive=False, executive_throws_when_run=None,
-                 initialize_scm_by_default=True, web=None, scm=None, os_name=None, os_version=None,
+    def __init__(self,
+                 log_executive=False,
+                 initialize_scm_by_default=True,
+                 web=None,
+                 scm=None,
+                 os_name=None,
+                 os_version=None,
                  time_return_val=123):
-
-        MockSystemHost.__init__(self, log_executive, executive_throws_when_run, os_name=os_name,
-                                os_version=os_version, time_return_val=time_return_val)
+        super(MockHost, self).__init__(
+            log_executive=log_executive,
+            os_name=os_name,
+            os_version=os_version,
+            time_return_val=time_return_val)
 
         add_unit_tests_to_mock_filesystem(self.filesystem)
         self.web = web or MockWeb()