Do not redirect stderr of Apache process

Apache gets stuck when the pipe connected to stderr gets filled up and
not read. This patch makes stderr of apache directly goes to build log.

BUG=30536, 431172

Review URL: https://codereview.chromium.org/712253002

git-svn-id: svn://svn.chromium.org/blink/trunk@185164 bbb929c8-8fbe-4397-9dbb-9b2b20218538