rename rebaseline_server JSON constants to be more consistent
(no behavioral change, no change to JSON file format)

(SkipBuildbotRuns)
NOTREECHECKS=True
NOTRY=True
R=rmistry@google.com

Author: epoger@google.com

Review URL: https://codereview.chromium.org/287473002

git-svn-id: http://skia.googlecode.com/svn/trunk@14701 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/rebaseline_server/server.py b/gm/rebaseline_server/server.py
index 73cfbef..40874d6 100755
--- a/gm/rebaseline_server/server.py
+++ b/gm/rebaseline_server/server.py
@@ -454,9 +454,9 @@
     else:
       now = int(time.time())
       response_dict = {
-          results_mod.KEY__HEADER: {
+          imagepairset.KEY__ROOT__HEADER: {
               results_mod.KEY__HEADER__SCHEMA_VERSION: (
-                  results_mod.REBASELINE_SERVER_SCHEMA_VERSION_NUMBER),
+                  results_mod.VALUE__HEADER__SCHEMA_VERSION),
               results_mod.KEY__HEADER__IS_STILL_LOADING: True,
               results_mod.KEY__HEADER__TIME_UPDATED: now,
               results_mod.KEY__HEADER__TIME_NEXT_UPDATE_AVAILABLE: (
@@ -549,7 +549,8 @@
     with _SERVER.results_rlock:
       oldResultsType = data[KEY__EDITS__OLD_RESULTS_TYPE]
       oldResults = _SERVER.results.get_results_of_type(oldResultsType)
-      oldResultsHash = str(hash(repr(oldResults[imagepairset.KEY__IMAGEPAIRS])))
+      oldResultsHash = str(hash(repr(
+          oldResults[imagepairset.KEY__ROOT__IMAGEPAIRS])))
       if oldResultsHash != data[KEY__EDITS__OLD_RESULTS_HASH]:
         raise Exception('results of type "%s" changed while the client was '
                         'making modifications. The client should reload the '