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This uses the new "trim" input conversion option and also the default arguments to exec script to clean up some calls.

R=bbudge@chromium.org, bbudge

Review URL: https://codereview.chromium.org/138693003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@287873 0039d316-1c4b-4281-b951-d872f2087c98