Reland zip_build.py changes from https://codereview.chromium.org/1221433020
Reland zip_build.py changes from https://codereview.chromium.org/1221433020

BUG=507298

Review URL: https://codereview.chromium.org/1272383003

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@296228 0039d316-1c4b-4281-b951-d872f2087c98

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