[build] Fix win-asan compilation

ASAN compilation expects a blacklist file.

NOTRY=true
TBR=sergiyb@chromium.org

Bug: chromium:726584
Change-Id: I1755dc20d3e91f9b15f15e0d34886a4fb03d97c1
Reviewed-on: https://chromium-review.googlesource.com/720804Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48577}

tools/memory/asan/blacklist_win.txt

+# The rules in this file are only applied at compile time. If you can modify the
+# source in question, consider function attributes to disable instrumentation.
+#
+# Please think twice before you add or remove these rules.
\ No newline at end of file