Add aliased variables for GPU failure browser crashes.

This CL saves some state in local variables and aliases them for
inclusion in crash minidumps. This information will help diagnose GPU
process failures with OOP-D and the resulting browser crash when we
can't launch a GPU process.

Bug: 849639
Change-Id: Id5a65c428eff83c80208b53081083d4feaf26063
Reviewed-on: https://chromium-review.googlesource.com/1138178
Reviewed-by: Jonathan Backer <backer@chromium.org>
Commit-Queue: kylechar <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575294}
1 file changed