Apply object updates from the network without blowing away object identity or UI attributes.

Tools/GardeningServer/model/ct-failure.html

Index: Tools/GardeningServer/model/ct-failure.html
diff --git a/Tools/GardeningServer/model/ct-failure.html b/Tools/GardeningServer/model/ct-failure.html
index 73ac640be64a96e7e45efab09c13153cf3301eb2..5d1d8f940f46f78a68d24ac1eed87f1e11772a74 100644
--- a/Tools/GardeningServer/model/ct-failure.html
+++ b/Tools/GardeningServer/model/ct-failure.html
@@ -6,9 +6,12 @@ found in the LICENSE file.
 
 <script>
 function CTFailure(step, reason, resultsByBuilder) {
+  this.fingerprint = step + '::' + reason;
   this.step = step;
   // FIXME: Rename this to reason.
   this.testName = reason;
+  // Maps a builder_name (e.g. "Mac ASan Tests (1)")
+  // to the details of the failure on that builder.
   this.resultNodesByBuilder = resultsByBuilder;
 }