Replace most LOG/CHECK statements with DLOG/DCHECK statements in base.

Replace most LOG/CHECK statements with DLOG/DCHECK statements in base.

[ Reland of 107042 http://codereview.chromium.org/8368009 ]

I tried hard not to change CHECKs that had side effects. I kept fatal checks
that seemed security or debugging-info (in crash reports) sensitive, and ones
that seems particularly well-conceived.
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=107434

[brettw, 2011-10-25 18:08:07]

This should be the same as the previous patch but with one conversion reverted.
There is a death test on mac that checks the log value, and I changed the log to
a DLOG, so the tests breaks in release mode. I just put that back with a comment
(it seems easy to break since you would not normally expect a log message change
to break a test).

http://codereview.chromium.org/8341026/diff/1/base/process_util_mac.mm
File base/process_util_mac.mm (right):

http://codereview.chromium.org/8341026/diff/1/base/process_util_mac.mm#newcod...
base/process_util_mac.mm:548: // A unit test checks this error message, so it
needs to be in release builds.
This is the difference from the previous patch.

[jar (doing other things), 2011-10-25 21:58:40]

lgtm