Mark usbPrivate API's histogram enums as DELETED_

usbPrivate was already deleted in https://codereview.chromium.org/617933002,
so mark their corresponding historgram enum as deleted.

Bug: None
Change-Id: I83776a8c5e1977f4262a12e7dbdc03d2f1140684
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1752178
Commit-Queue: Istiaque Ahmed <[email protected]>
Reviewed-by: Devlin <[email protected]>
Cr-Commit-Position: refs/heads/master@{#686804}
diff --git a/extensions/browser/extension_function_histogram_value.h b/extensions/browser/extension_function_histogram_value.h
index 1330b4e..e6d91e98 100644
--- a/extensions/browser/extension_function_histogram_value.h
+++ b/extensions/browser/extension_function_histogram_value.h
@@ -932,8 +932,8 @@
   DELETED_FILESYSTEM_UNOBSERVEENTRY = 871,
   DELETED_FILESYSTEM_GETOBSERVEDENTRIES = 872,
   BROWSINGDATA_REMOVESERVICEWORKERS = 873,
-  USBPRIVATE_GETDEVICES = 874,
-  USBPRIVATE_GETDEVICEINFO = 875,
+  DELETED_USBPRIVATE_GETDEVICES = 874,
+  DELETED_USBPRIVATE_GETDEVICEINFO = 875,
   DELETED_EASYUNLOCKPRIVATE_UPDATESCREENLOCKSTATE = 876,
   CAST_CHANNEL_GETLOGS = 877,
   DELETED_EASYUNLOCKPRIVATE_SETPERMITACCESS = 878,