GitLab

This contains fixes for the following sorts of issues:
* Assignment inside conditional
* Signedness mismatch

BUG=81439
TEST=none

Review URL: https://codereview.chromium.org/372163005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@281964 0039d316-1c4b-4281-b951-d872f2087c98