Mostly useful for commit-queue as I want to both send the trace and be able to
read it locally.

TBR=jam

Review URL: http://codereview.chromium.org/5608001

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@68055 0039d316-1c4b-4281-b951-d872f2087c98