rebaseline_server: disable image magnifier, for huge UI speedup

BUG=skia:2248
NOTREECHECKS=True
NOTRY=True
R=rmistry@google.com
TBR=rmistry

Author: epoger@google.com

Review URL: https://codereview.chromium.org/193073003

git-svn-id: http://skia.googlecode.com/svn/trunk@13727 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed