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This CL changes the dynamic resolving of the attribute functions to static
linking as the APIs are available on all supported platforms. At the same
time the opportunity to cleanup the code to more modern standards has been
taken.

Bug: 986625
Change-Id: Iafeed84a46fda8c0a21ad32e19af29c7a2c9a52a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1714216
Commit-Queue: James Forshaw <forshaw@chromium.org>
Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#680179}