GitLab

Adding helper class VariantVector which can be populated similarly to
an STL container but without the compile-time requirement of knowing
what type will be stored. Internally represented as a vector of
Scopedvariants with a uniform VARTYPE.

- Can release ownership of its contents as either a Scalar VARIANT or,
  as a SAFEARRAY wrapped by a VARIANT.

- When the vector is destructed, any remaining managed contents are
  released automatically.


Also improving the ScopedVariant::Compare method to be able to handle
some types that ::VarCmp cannot.
e.g. VT_I1, VT_UI2, VT_UI4, VT_UI8, VT_UNKNOWN, VT_DISPATCH.

Split out from :
https://chromium-review.googlesource.com/c/chromium/src/+/2188057

Bug: 928948

AX-Relnotes: (Should not be user facing) Adjusted VARIANT comparisons to be more type-strict and adds support for a few previously unsupported VARTYPEs.

Change-Id: I1e300bae6004ba17986643916e0a182f3e400da6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2243839Reviewed-by: Robert Liao <robliao@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Greg Thompson <grt@chromium.org>
Reviewed-by: Nektarios Paisios <nektar@chromium.org>
Reviewed-by: Kevin Babbitt <kbabbitt@microsoft.com>
Commit-Queue: Adam Ettenberger <Adam.Ettenberger@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#787410}