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To accommodate .aab files and TriChrome, we'd like SuperSize to handle
multiple "containers" and store data in a single .size file.

This CL performs refactoring archive.py to prepare for extending
SuperSize for multiple containers. Details:
* Move temp-file extraction logic with |args.minimal_apks_file| depper,
  into _DeduceMainPaths().
  * Remove |args.extracted_minimal_apk_path|.
* CreateSizeInfo():
  * Change params to take lists of
    {metadata, section_sizes, raw_symbols}.
  * Implementation TODO; keep old behavior by simply using the first
    element of the above.
* _DeduceMainPaths():
  * Change to a generator that yield multiple param sets, one for each
    container.
  * Resolve |apk_prefix| and |apk_path| as separate concepts.
  * Move most of the logic to _Inner() function.
  * Split out _DeduceAuxPaths().
* Run():
  * Merge with _RunInternal().
  * Main action changes:
    * Visits param sets generated from _DeduceMainPaths().
    * Potentially create multiple
      {metadata, section_sizes, raw_symbols},
      now stored into |*_list| variables.

Bug: 900259, 1040645
Change-Id: Ib158f3d5c8b11567f09826fd0c0b31729f4e065c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2125388Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#754466}