Fix archive names for MAC ASAN builds. E.g. see https://commondatastorage.googleapis.com/chromium-browser-asan/mac-release/cf_archive-mac-release-215626.zip. Prefix needs to be changed from default 'cf_archive-' to the tool name 'asan'. We have the same configuration on linux bots.
Fix archive names for MAC ASAN builds. E.g. see https://commondatastorage.googleapis.com/chromium-browser-asan/mac-release/cf_archive-mac-release-215626.zip. Prefix needs to be changed from default 'cf_archive-' to the tool name 'asan'. We have the same configuration on linux bots.

Review URL: https://chromiumcodereview.appspot.com/22273002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@216715 0039d316-1c4b-4281-b951-d872f2087c98

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