Revert of Reland of: Refactor process_resources.py to use aapt's --extra-packages (patchset #3 id:60001 of https://codereview.chromium.org/2096693002/ )

Reason for revert:
Relanded the wrong patchset! Missing code for excluding styleable.

Original issue's description:
> Reland #2 Refactor process_resources.py to use aapt's --extra-packages
>
> Without --extra-packages, we now use the same code-path
> to generate the current R.java as well as dependent R.java files.
> Previously, we were combing aapt's R.java with our own template.
>
> Our custom template no longer generating assignments for non-array
> styleable fields within onResourcesLoaded() (matches aapt's behaviour)
>
> Reason for reland:
> Fixed GYP issue & verified all webrtc targets compile.
>
> TBR=jbudorick
> BUG=none
>
> Committed: https://crrev.com/f3c8dfe0190ad701a9339436ff1d7f3b1e556e7d
> Cr-Commit-Position: refs/heads/master@{#401624}

[email protected],[email protected]
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=none

Review-Url: https://codereview.chromium.org/2097583002
Cr-Commit-Position: refs/heads/master@{#401637}
2 files changed