rebaseline_server: allow JSON to control column filtering
Makes the rebaseline_server client more generic, allowing the server to tweak display properties by writing directives into the JSON file.
Adds two new fields to the rebaseline_server JSON file (and thus increments VALUE__HEADER__SCHEMA_VERSION):
1. KEY__ROOT__EXTRACOLUMNORDER: order in which the client should display columns
2. KEY__EXTRACOLUMNHEADERS__USE_FREEFORM_FILTER: whether a column should be filtered using a freeform text field or checkboxes
BUG=skia:2230
NOTRY=True
R=rmistry@google.com
Author: epoger@google.com
Review URL: https://codereview.chromium.org/376623002
11 files changed