Add various UMA histograms for measuring GCM crypto performance

components/gcm_driver/gcm_client_impl.cc

 // 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.
 
 #include "components/gcm_driver/gcm_client_impl.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 1136 matching lines @@
     case GCMClientImpl::READY:
       return "READY";
     default:
       NOTREACHED();
       return std::string();
   }
 }
 
 void GCMClientImpl::RecordDecryptionFailure(
     const std::string& app_id,
-    GCMEncryptionProvider::DecryptionFailure reason) {
-  recorder_.RecordDecryptionFailure(app_id, reason);
+    GCMEncryptionProvider::DecryptionResult result) {
+  recorder_.RecordDecryptionFailure(app_id, result);
 }
 
 void GCMClientImpl::SetRecording(bool recording) {
   recorder_.set_is_recording(recording);
 }
 
 void GCMClientImpl::ClearActivityLogs() {
   recorder_.Clear();
 }
 
@@ skipping 209 matching lines @@
 bool GCMClientImpl::HasStandaloneRegisteredApp() const {
   if (registrations_.empty())
     return false;
   // Note that account mapper is not counted as a standalone app since it is
   // automatically started when other app uses GCM.
   return registrations_.size() > 1 ||
          !ExistsGCMRegistrationInMap(registrations_, kGCMAccountMapperAppId);
 }
 
 }  // namespace gcm