Linux: convert some CHECK macros to more useful CHECK_* macros in the proxy config code.
Linux: convert some CHECK macros to more useful CHECK_* macros in the proxy config code.

Every now and then I am able to reproduce this bug, but it's very rare. I'd like to be able to see the failed comparison in my .xsession-errors next time.

BUG=75508

Review URL: http://codereview.chromium.org/9310080

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@120406 0039d316-1c4b-4281-b951-d872f2087c98

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