Integrate ETW with VLOG logging.
This change extends the log severities into the negative for VLOG verbosities.
It also keeps track of file/line information and passes it to any registered log handler.
The log level is naturally controlled by translating ETW log levels to the severities.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/4164011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@65062 0039d316-1c4b-4281-b951-d872f2087c98

• base/logging.cc[diff]
• base/logging.h[diff]
• base/logging_win.cc[diff]
• base/logging_win.h[diff]
• base/vlog.cc[diff]
• base/vlog.h[diff]
• base/vlog_unittest.cc[diff]
• ceee/testing/utils/test_utils.cc[diff]
• ceee/testing/utils/test_utils.h[diff]
• chrome/browser/safe_browsing/safe_browsing_database_unittest.cc[diff]
• chrome/common/logging_chrome.cc[diff]