teach rebaseline_server to generate diffs of rendered SKPs

gm/rebaseline_server/static/live-loader.js

Index: gm/rebaseline_server/static/live-loader.js
diff --git a/gm/rebaseline_server/static/loader.js b/gm/rebaseline_server/static/live-loader.js
similarity index 98%
copy from gm/rebaseline_server/static/loader.js
copy to gm/rebaseline_server/static/live-loader.js
index 19bc2378a0cbfd16b30d98bdf6a46151568aa8b4..418e9cc708a719ef7377a5f39c0741c8ba1ad8e1 100644
--- a/gm/rebaseline_server/static/loader.js
+++ b/gm/rebaseline_server/static/live-loader.js
@@ -127,7 +127,8 @@ Loader.controller(
     $scope.readyToDisplay = false;
     $scope.constants = constants;
     $scope.windowTitle = "Loading GM Results...";
-    $scope.resultsToLoad = $location.search().resultsToLoad;
+    $scope.setADir = $location.search().setADir;
+    $scope.setBDir = $location.search().setBDir;
     $scope.loadingMessage = "please wait...";
 
     /**
@@ -135,7 +136,10 @@ Loader.controller(
      * Once the dictionary is loaded, unhide the page elements so they can
      * render the data.
      */
-    $http.get($scope.resultsToLoad).success(
+    var liveQueryUrl =
+       "/live-results/setADir=" + encodeURIComponent($scope.setADir) +
+       "&setBDir=" + encodeURIComponent($scope.setBDir);
+    $http.get(liveQueryUrl).success(
       function(data, status, header, config) {
         var dataHeader = data[constants.KEY__ROOT__HEADER];
         if (dataHeader[constants.KEY__HEADER__SCHEMA_VERSION] !=
@@ -247,7 +251,8 @@ Loader.controller(
           // Set up mapping for URL parameters.
           // parameter name -> copier object to load/save parameter value
           $scope.queryParameters.map = {
-            'resultsToLoad':         $scope.queryParameters.copiers.simple,
+            'setADir':               $scope.queryParameters.copiers.simple,
+            'setBDir':               $scope.queryParameters.copiers.simple,
             'displayLimitPending':   $scope.queryParameters.copiers.simple,
             'showThumbnailsPending': $scope.queryParameters.copiers.simple,
             'mergeIdenticalRowsPending': $scope.queryParameters.copiers.simple,
@@ -282,7 +287,7 @@ Loader.controller(
               var baseUrl = imageSet[baseUrlKey];
               if ((baseUrl.substring(0, 1) != '/') &&
                   (baseUrl.indexOf('://') == -1)) {
-                imageSet[baseUrlKey] = $scope.resultsToLoad + '/../' + baseUrl;
+                imageSet[baseUrlKey] = '/' + baseUrl;
               }
             }
           );