Fix corrupt line-endings on port_monitor.cc. (Step 1, remove line-endings property)

BUG=none
TBR=vandebo@chromium.org
Review URL: http://codereview.chromium.org/6880080

git-svn-id: http://src.chromium.org/svn/trunk/src/build@82393 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

whitespace_file.txt

@@ -6,6 +6,4 @@ This file is used for making non-code changes to trigger buildbot cycles. Make
 any modification below this line.
 ================================================================================
 
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-
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