This contains fixes for the following sorts of issues:
* Assignment inside conditional
* Taking the address of a temporary
* Octal escape sequence terminated by decimal number
* Signedness mismatch
* Possibly-uninitialized local variable
This also contains a small number of cleanups to nearby code (e.g. no else after return).
BUG=81439
TEST=none
Review URL: https://codereview.chromium.org/382673002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@283967 0039d316-1c4b-4281-b951-d872f2087c98
481c3e82e2