On library load failure, retry without shared RELRO.
https://codereview.chromium.org/
443393003 introduced code for service
processes that turns off RELRO sharing and retries a library load in
the event of an address clash or other failure to load a library with
shared RELRO.
This change adds the same back off and retry strategy to the libraries
loaded in the main browser process, for cases where low memory devices
aggressively share RELRO as widely as possible.
BUG=411928
TBR=rmcilroy@chromium.org
Review URL: https://codereview.chromium.org/
551373004
Cr-Commit-Position: refs/heads/master@{#294393}