Add gn target for running sizes.py against //chrome.

Bug: 961548
Change-Id: I7638bd524d1802bdc9bc02ddd7437a9d395e2240
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1604184
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#658578}
1 file changed