rebaseline.py: if expectations dir contains JSON format results, update those instead of image files

Part of Step 3 in https://goto.google.com/ChecksumTransitionDetail

R=senorblanco@chromium.org

Review URL: https://codereview.chromium.org/18348018

git-svn-id: http://skia.googlecode.com/svn/trunk@9910 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tools/tests/run.sh b/tools/tests/run.sh
index 1a3f40b..bbcfeb9 100755
--- a/tools/tests/run.sh
+++ b/tools/tests/run.sh
@@ -267,13 +267,13 @@
 REBASELINE_OUTPUT=tools/tests/rebaseline/output
 
 # These test the old image-file expectations.
-rebaseline_images_test "--expectations-root fake/expectations/path --json-base-url file:$REBASELINE_INPUT/json1 --tests test1 test2 --configs 565 8888 --subdirs base-android-galaxy-nexus base-shuttle-win7-intel-float" "$REBASELINE_OUTPUT/subset"
-rebaseline_images_test "--json-base-url file:nonexistent-path --tests test1 test2" "$REBASELINE_OUTPUT/all"
-rebaseline_images_test "--json-base-url file:$REBASELINE_INPUT/json1 --subdirs base-android-galaxy-nexus base-shuttle-win7-intel-float" "$REBASELINE_OUTPUT/using-json1"
-rebaseline_images_test "--json-base-url file:$REBASELINE_INPUT/json1 --subdirs base-android-galaxy-nexus base-shuttle-win7-intel-float --add-new" "$REBASELINE_OUTPUT/using-json1-add-new"
+rebaseline_images_test "--expectations-root fake/expectations/path --actuals-base-url file:$REBASELINE_INPUT/json1 --tests test1 test2 --configs 565 8888 --subdirs base-android-galaxy-nexus base-shuttle-win7-intel-float" "$REBASELINE_OUTPUT/subset"
+rebaseline_images_test "--actuals-base-url file:nonexistent-path --tests test1 test2" "$REBASELINE_OUTPUT/all"
+rebaseline_images_test "--actuals-base-url file:$REBASELINE_INPUT/json1 --subdirs base-android-galaxy-nexus base-shuttle-win7-intel-float" "$REBASELINE_OUTPUT/using-json1"
+rebaseline_images_test "--actuals-base-url file:$REBASELINE_INPUT/json1 --subdirs base-android-galaxy-nexus base-shuttle-win7-intel-float --add-new" "$REBASELINE_OUTPUT/using-json1-add-new"
 
 # These test the new JSON-format expectations.
-rebaseline_test "$REBASELINE_INPUT/json1" "--json-base-url file:$REBASELINE_INPUT/json1 --subdirs base-android-galaxy-nexus base-shuttle-win7-intel-float" "$REBASELINE_OUTPUT/using-json1-expectations"
+rebaseline_test "$REBASELINE_INPUT/json1" "--actuals-base-url $REBASELINE_INPUT/json1 --subdirs base-android-galaxy-nexus base-shuttle-win7-intel-float" "$REBASELINE_OUTPUT/using-json1-expectations"
 
 #
 # Test jsondiff.py ...