Also remove 'base_dir' temp directories.
Also remove 'base_dir' temp directories.

TBR=nsylvain@chromium.org
BUG=
TEST=


Review URL: https://chromiumcodereview.appspot.com/10557038

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@142726 0039d316-1c4b-4281-b951-d872f2087c98

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