GitLab

First attempt:
https://codereview.chromium.org/2243343004/

Reason for reland:
Now ignores placeholder .so files

The goal is to have a single script that reports all .apk
size related metrics.

* Uses method_count.py to get dex info.
* Already had static initializer logic, but now shows it even without
--so_with_symbols_path.
* Tweaks the static initializer count logic to sum up rather for all
.so files rather than report the same metric repeatedly.

TBR=rnephew@chromium.org,amineer@chromium.org
BUG=609365

Review-Url: https://codereview.chromium.org/2294093006
Cr-Commit-Position: refs/heads/master@{#415725}