Add various UMA histograms for measuring GCM crypto performance

components/gcm_driver/fake_gcm_client.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/fake_gcm_client.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 142 matching lines @@
                          const OutgoingMessage& message) {
   DCHECK(io_thread_->RunsTasksOnCurrentThread());
 
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(&FakeGCMClient::SendFinished,
                             weak_ptr_factory_.GetWeakPtr(), app_id, message));
 }
 
 void FakeGCMClient::RecordDecryptionFailure(
     const std::string& app_id,
-    GCMEncryptionProvider::DecryptionFailure reason) {
-  recorder_.RecordDecryptionFailure(app_id, reason);
+    GCMEncryptionProvider::DecryptionResult result) {
+  recorder_.RecordDecryptionFailure(app_id, result);
 }
 
 void FakeGCMClient::SetRecording(bool recording) {
   recorder_.set_is_recording(recording);
 }
 
 void FakeGCMClient::ClearActivityLogs() {
   recorder_.Clear();
 }
 
@@ skipping 144 matching lines @@
     delegate_->OnMessageSendError(app_id, send_error_details);
 }
 
 void FakeGCMClient::SendAcknowledgement(const std::string& app_id,
                                         const std::string& message_id) {
   if (delegate_)
     delegate_->OnSendAcknowledged(app_id, message_id);
 }
 
 }  // namespace gcm