Set no_gclient_branch=True in master.client.nacl.ports.git
Set no_gclient_branch=True in master.client.nacl.ports.git

This is needed in order for the gclient sync step to generate
a meaningfull --revision argument.

R=szager@chromium.org, szager

Review URL: https://codereview.chromium.org/197473010

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@256700 0039d316-1c4b-4281-b951-d872f2087c98

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