Use smaller builddir for safari mobile.
Use smaller builddir for safari mobile.

We are hitting again the issue of the bad combination of a lot of xcode inputs and a long pwd. Since we will be moving a bunch of the packages soon I don't want to waste time on it.

TBR=whesse@google.com
BUG=

Review URL: https://codereview.chromium.org/789963006

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@293363 0039d316-1c4b-4281-b951-d872f2087c98

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