Changes the sending of PING to 1 secs instead of 200ms
Changes the sending of PING to 1 secs instead
of 200ms

BUG=100587
R=jar
TEST=network unit tests
Review URL: http://codereview.chromium.org/8330002

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@105968 0039d316-1c4b-4281-b951-d872f2087c98

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