GitLab

Refactor a trivially copyable (e.g. plain old data) object out of the
current GuardedPageAllocator. This 'base state' object encapsulates
just the information required by the crash handler. Because its
construction/destruction is trivial, a base state object can be
overwritten with out-of-process memory and destructed without concerns
about undefined behavior or destructing complex objects with pointers
from another process.

The GuardedPageAllocator encapsulates all of the remaining data and
allocation logic that does not to be reached by the crash handler. As
such, it's been refactored into client/.

Bug: 896019

Change-Id: I418411b914a61c592f8b585d55058aa5a705acfb
Reviewed-on: https://chromium-review.googlesource.com/c/1339246
Commit-Queue: Vlad Tsyrklevich <vtsyrklevich@chromium.org>
Reviewed-by: Vitaly Buka <vitalybuka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#610902}