From third_party/vulkan-validation-layers/src/layers/CMakeLists.txt
Otherwise, there is a conflict between global functions with same name
from different layers and the loader.
Conflict is resolved by -Bsymbolic.

BUG=angleproject:2296

Change-Id: I40859326626c3865ba346c6e817b7c512735054e
Reviewed-on: https://chromium-review.googlesource.com/850727
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>