As Marja suggested, this CL changes tools/locs.py in such a way that
it also counts the bytes in the input file and the output file.

Example output now looks similar to this:

Processed 1,526 files in 24.58 sec.
gen         (   31 files):    94,507 LoC (  4,972 kB) to    2,839,311 LoC (183,777 kB) (   30x)
src         (  630 files):   371,499 LoC ( 14,743 kB) to   53,707,841 LoC (  3,155 MB) (  145x)
test        (  381 files):   492,861 LoC ( 25,372 kB) to   36,885,988 LoC (  2,194 MB) (   75x)
third_party (  433 files):   239,155 LoC (  8,683 kB) to    9,713,872 LoC (412,829 kB) (   41x)
total       ( 1526 files): 1,212,675 LoC ( 54,242 kB) to  104,133,982 LoC (  5,973 MB) (   86x)


Change-Id: I1ff5e752ee3a96d388a4393c2592aec68f834000
Notry: true
Reviewed-on: https://chromium-review.googlesource.com/c/1450113
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59322}