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Clank build excludes usb_ids.*, but the source files (inlcude the giant
file usb_ids_gen.cc) still got compiled, even though its results are not
included in the final APK. This adds unnecessary work for Clank builds,
and creates overhead to Supersize archive command. This CL removes these
vacuous usb_ids.* compilation under Android. This speeds up Supersize
archive by about 20% (and probably shaves seconds from Clank build).

Bug: 779162
Change-Id: I4e4a9eb4274bfa9d298a5ce887179629a5cb6b7f
Reviewed-on: https://chromium-review.googlesource.com/740688
Commit-Queue: Reilly Grant <reillyg@chromium.org>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#512538}