Do the cleanup first to ensure the device is always cleaned.
Do the cleanup first to ensure the device is always cleaned.

BUG=

Review URL: https://codereview.chromium.org/1351343002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@296763 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build