[IndexedDB] Abort transaction on unknown blob

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 0a268919a1b35d0c32f6acc65993bdfbc6755aad..55b4650e603ad0ce8c9d39d9349481e5ff14bc7b 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -69208,6 +69208,22 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="Storage.IndexedDB.PutBlobSizeKB" units="KB">
+  <owner>dmurph@chromium.org</owner>
+  <summary>
+    Records the size of a blob used in an IndexedDB add/put operation. Recorded
+    for every put operation that contains a blob.
+  </summary>
+</histogram>
+
+<histogram name="Storage.IndexedDB.PutValidBlob" enum="Boolean">
+  <owner>dmurph@chromium.org</owner>
+  <summary>
+    Records if a blob intended to be used in an IndexedDB add/put operation is a
+    valid blob. Recorded for every put operation that contains a blob.
+  </summary>
+</histogram>
+
 <histogram name="Style.AuthorStyleSheet.ParseTime" units="microseconds">
   <owner>csharrison@chromium.org</owner>
   <summary>