[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 a4e22d5aef91ab5bedaff14b7d6ac05249db0097..7785c48fc96109ebd98e05ca3791ff79f990382e 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -68482,6 +68482,22 @@ 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>