Set process name and pid when faking out a crash for asan.

Tools/Scripts/webkitpy/layout_tests/port/driver.py

Index: Tools/Scripts/webkitpy/layout_tests/port/driver.py
diff --git a/Tools/Scripts/webkitpy/layout_tests/port/driver.py b/Tools/Scripts/webkitpy/layout_tests/port/driver.py
index a3364d01947276ed92edb06aae6bc9a121dd7645..fda859e39504a2768fd9c4f1d080e9113edb698a 100644
--- a/Tools/Scripts/webkitpy/layout_tests/port/driver.py
+++ b/Tools/Scripts/webkitpy/layout_tests/port/driver.py
@@ -170,6 +170,8 @@ class Driver(object):
         if not crashed and 'AddressSanitizer' in self.error_from_test:
             self.error_from_test = 'OUTPUT CONTAINS "AddressSanitizer", so we are treating this test as if it crashed, even though it did not.\n\n' + self.error_from_test
             crashed = True
+            self._crashed_process_name = "unknown process name"
+            self._crashed_pid = 0
 
         if stop_when_done or crashed or timed_out or leaked:
             # We call stop() even if we crashed or timed out in order to get any remaining stdout/stderr output.