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Change DisplayResourceProvider so that it records memory dumps when used
with SkiaRenderer. Also shared ownership edges were broken with shared
image backed resources, so update both GLRenderer and SkiaRenderer to
make a GUID based on mailbox. This might break shared ownership in
GLRenderer with things that aren't on shared image yet, but it fixes
shared ownership for everything that uses shared image.

Bug: 1058974
Change-Id: Iaaf981f28212cabe4d5e4535158afabaff2bd6af
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2131016Reviewed-by: Jonathan Backer <backer@chromium.org>
Commit-Queue: kylechar <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#755388}