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 155e7456bbe778b8978dac589bc21db681ed8636..bc68e30c15f9361e13cdeab020ec5e05d608319d 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/common/host_mock.py
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/common/host_mock.py
@@ -40,11 +40,11 @@ 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,
+    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,
+        MockSystemHost.__init__(self, log_executive, os_name=os_name,
                                 os_version=os_version, time_return_val=time_return_val)
 
         add_unit_tests_to_mock_filesystem(self.filesystem)