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This CL splits the SODA component into a single SODA binary component
and multiple language pack components.

Todo: Update the settings UI reflect the download progress of the
SODA binary and the language pack(s).

Todo: Verify that the SODA binary component and the language pack
component is installed before launching the Live caption feature.

Change-Id: Ia82ac3b46da2d37ce1e0fae9d6cd7fb541d67d60
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2340873Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Matthew Denton <mpdenton@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: Evan Liu <evliu@google.com>
Cr-Commit-Position: refs/heads/master@{#800723}