Obsolete Platform.MemoryBandwidth.ReadWrite

Bug: 1088512
Change-Id: I95c6688bdf1fc106e77fae90fc4e37e42c99ec81
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2434017Reviewed-by: Kouhei Ueno <kouhei@chromium.org>
Reviewed-by: Brian White <bcwhite@chromium.org>
Commit-Queue: Hajime Hoshi <hajimehoshi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815625}

tools/metrics/histograms/histograms_xml/obsolete_histograms.xml

@@ -56989,6 +56989,20 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
   </summary>
 </histogram>
 
+<histogram name="Platform.MemoryBandwidth.ReadWrite" units="MB/s"
+    expires_after="M85">
+  <obsolete>
+    Removed 09/2020 due to lack of usage.
+  </obsolete>
+  <owner>hajimehoshi@chromium.org</owner>
+  <owner>kouhei@chromium.org</owner>
+  <owner>cast-analytics@google.com</owner>
+  <summary>
+    Peak memory bandwith (read and write) usage during the last sample interval.
+    The sample interval may vary from seconds to several minutes.
+  </summary>
+</histogram>
+
 <histogram name="Platform.MountEncrypted.EncryptedFsType"
     enum="MountEncryptedEncryptedFsType" expires_after="M85">
   <obsolete>

tools/metrics/histograms/histograms_xml/platform/histograms.xml

@@ -655,17 +655,6 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
   </summary>
 </histogram>
 
-<histogram name="Platform.MemoryBandwidth.ReadWrite" units="MB/s"
-    expires_after="M85">
-  <owner>hajimehoshi@chromium.org</owner>
-  <owner>kouhei@chromium.org</owner>
-  <owner>cast-analytics@google.com</owner>
-  <summary>
-    Peak memory bandwith (read and write) usage during the last sample interval.
-    The sample interval may vary from seconds to several minutes.
-  </summary>
-</histogram>
-
 <histogram name="Platform.MemuseAnon0" units="units" expires_after="M85">
   <owner>hajimehoshi@chromium.org</owner>
   <owner>kouhei@chromium.org</owner>