[gdbinit] Fix regex for assertion scopes in bta

This restores assertion scope marking in the bta command making it
obvious which frames disallowed heap allocation for instance.

Change-Id: Ie99ff06df95b6ab6820e53798b12b1cd1bd97338
Reviewed-on: https://chromium-review.googlesource.com/c/1477213Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59676}

tools/gdbinit

@@ -82,7 +82,7 @@ define bta
 python
 import re
 frame_re = re.compile("^#(\d+)\s*(?:0x[a-f\d]+ in )?(.+) \(.+ at (.+)")
-assert_re = re.compile("^\s*(\S+) = .+<v8::internal::Per\w+AssertType::(\w+)_ASSERT, (false|true)>")
+assert_re = re.compile("^\s*(\S+) = .+<v8::internal::Per\w+AssertScope<v8::internal::(\S*), (false|true)>")
 btl = gdb.execute("backtrace full", to_string = True).splitlines()
 for l in btl:
   match = frame_re.match(l)