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This CL introduces a new class ScopedVMMap, a fork of ScopedVMRead which maps the memory using vm_remap() instead of reading it. This is useful for Annotations which use ScopedSpinGuard to protect reads from simultaneous writes; the in-process intermediate dump handler can try to take the spin guard when reading such an Annotation and skip reading it if it the spin guard could not be obtained. Change-Id: I60d7a48d1ba4e5d2dfdb44307b78b4d9ffb73560 Bug: crashpad:437 Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/4114550 Reviewed-by: Mark Mentovai <mark@chromium.org> Commit-Queue: Ben Hamilton <benhamilton@google.com>