Remove kwargs copy, it is not necessary. Remove ordered argument support from popen to simplify it.
Remove kwargs copy, it is not necessary. Remove ordered argument support from popen to simplify it.

Move logging call to the base function.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/3300008

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@58523 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

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