[Mac] Log CHECK() file, line and message into breakpad.
[Mac] Log CHECK() file, line and message into breakpad.

This should make it somewhat easier to figure out which FATAL log line
fired, in the face of inlining and branching.

BUG=none
TEST=monitor crashes.


Review URL: http://codereview.chromium.org/8401018

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@107805 0039d316-1c4b-4281-b951-d872f2087c98

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