PushMessaging.UnregistrationReason UMA should count GCM Store resets

content/public/common/push_messaging_status.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_COMMON_PUSH_MESSAGING_STATUS_H_
 #define CONTENT_PUBLIC_COMMON_PUSH_MESSAGING_STATUS_H_
 
 namespace content {
 
 // Push registration success/error codes for internal use & reporting in UMA.
@@ skipping 72 matching lines @@
 
   // Automatic - incoming message's app id was unknown.
   PUSH_UNREGISTRATION_REASON_DELIVERY_UNKNOWN_APP_ID = 3,
 
   // Automatic - incoming message's origin no longer has permission.
   PUSH_UNREGISTRATION_REASON_DELIVERY_PERMISSION_DENIED = 4,
 
   // Automatic - incoming message's service worker was not found.
   PUSH_UNREGISTRATION_REASON_DELIVERY_NO_SERVICE_WORKER = 5,
 
+  // Automatic - GCM Store reset due to corruption.
+  PUSH_UNREGISTRATION_REASON_GCM_STORE_RESET = 6,
+
   // NOTE: Do not renumber these as that would confuse interpretation of
   // previously logged data. When making changes, also update the enum list
   // in tools/metrics/histograms/histograms.xml to keep it in sync, and
   // update PUSH_UNREGISTRATION_REASON_LAST below.
 
-  PUSH_UNREGISTRATION_REASON_LAST =
-      PUSH_UNREGISTRATION_REASON_DELIVERY_NO_SERVICE_WORKER
+  PUSH_UNREGISTRATION_REASON_LAST = PUSH_UNREGISTRATION_REASON_GCM_STORE_RESET
 };
 
 // Push unregistration success/error codes for internal use & reporting in UMA.
 // Enum values can be added, but must never be renumbered or deleted and reused.
 enum PushUnregistrationStatus {
   // The unregistration was successful.
   PUSH_UNREGISTRATION_STATUS_SUCCESS_UNREGISTERED = 0,
 
   // Unregistration was unnecessary, as the registration was not found.
   PUSH_UNREGISTRATION_STATUS_SUCCESS_WAS_NOT_REGISTERED = 1,
@@ skipping 116 matching lines @@
       PUSH_USER_VISIBLE_STATUS_REQUIRED_BUT_NOT_SHOWN_GRACE_EXCEEDED
 };
 
 const char* PushRegistrationStatusToString(PushRegistrationStatus status);
 
 const char* PushUnregistrationStatusToString(PushUnregistrationStatus status);
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_PUSH_MESSAGING_STATUS_H_