Improve template in master.chromium.tools.build.
Improve template in master.chromium.tools.build.

R=machenbach@chromium.org
BUG=548793
TEST=locally

Review URL: https://codereview.chromium.org/1415143008

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@297489 0039d316-1c4b-4281-b951-d872f2087c98

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