rebaseline_server UI: add link to raw JSON

patchset 3 from https://codereview.chromium.org/467843002

NOTREECHECKS=true
NOTRY=true
R=stephana@google.com
TBR=stephana

Author: epoger@google.com

Review URL: https://codereview.chromium.org/475623002

gm/rebaseline_server/static/live-loader.js

@@ -141,12 +141,12 @@ Loader.controller(
      * Once the dictionary is loaded, unhide the page elements so they can
      * render the data.
      */
-    var liveQueryUrl =
+    $scope.liveQueryUrl =
        "/live-results/setADir=" + encodeURIComponent($scope.setADir) +
        "&setASection=" + encodeURIComponent($scope.setASection) +
        "&setBDir=" + encodeURIComponent($scope.setBDir) +
        "&setBSection=" + encodeURIComponent($scope.setBSection);
-    $http.get(liveQueryUrl).success(
+    $http.get($scope.liveQueryUrl).success(
       function(data, status, header, config) {
         var dataHeader = data[constants.KEY__ROOT__HEADER];
         if (dataHeader[constants.KEY__HEADER__SCHEMA_VERSION] !=

gm/rebaseline_server/static/live-view.html

@@ -50,6 +50,7 @@
     <div ng-show="header[constants.KEY__HEADER__TIME_UPDATED]">
       setA: "{{setASection}}" within {{setADir}}<br>
       setB: "{{setBSection}}" within {{setBDir}}<br>
+      <a href="{{liveQueryUrl}}">latest raw JSON diffs between these two sets</a><br>
       These results current as of
       {{localTimeString(header[constants.KEY__HEADER__TIME_UPDATED])}}
     </div>