Speculative fix for bug 783312

The change at @514907 appears to have subtly changed the logic,
so mimic the GetGpuPreSandboxHook() flow as existed in the old
code at

https: //chromium-review.googlesource.com/c/chromium/src/+/757767/4/content/gpu/gpu_sandbox_hook_linux.cc
Bug: 783312
Change-Id: I14996782de9fc469d3e31e7f1ba46ec353922710
Reviewed-on: https://chromium-review.googlesource.com/761838
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#515389}
1 file changed