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On startup, ::NtQuerySystemInformation() is invoked to get the number
of hard faults and determine if the startup is "warm" or "cold". The
function can fail if the provided buffer is too small. In that case,
we resize the buffer to the size requested by the function and we
retry. In some cases, the size returned by the function is very large
(> 1 MB). It is undesirable to invoke a function to fill a large buffer
just to record startup histograms.

This CL does not get the hard fault count if it requires a buffer with
a size >= 512 KB. The failure to get the hard fault count is reported
in the "undetermined" bucket of the Startup.Temperature histogram.
Histograms suffixed with the startup temperature are obviously not
recorded.

Bug: 1085716
Change-Id: I0864a2af26e07cddcab4e094d344473ccbb5b9a5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2302829Reviewed-by: Gabriel Charette <gab@chromium.org>
Commit-Queue: François Doray <fdoray@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823977}