Add various UMA histograms for measuring GCM crypto performance

components/gcm_driver/fake_gcm_driver.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_driver.h"
 
 #include "base/files/file_path.h"
 
 namespace gcm {
 
@@ skipping 58 matching lines @@
 void FakeGCMDriver::UnregisterImpl(const std::string& app_id) {
 }
 
 void FakeGCMDriver::SendImpl(const std::string& app_id,
                              const std::string& receiver_id,
                              const OutgoingMessage& message) {
 }
 
 void FakeGCMDriver::RecordDecryptionFailure(
     const std::string& app_id,
-    GCMEncryptionProvider::DecryptionFailure reason) {
+    GCMEncryptionProvider::DecryptionResult result) {
 }
 
 void FakeGCMDriver::SetAccountTokens(
     const std::vector<GCMClient::AccountTokenInfo>& account_tokens) {
 }
 
 void FakeGCMDriver::UpdateAccountMapping(
     const AccountMapping& account_mapping) {
 }
 
@@ skipping 15 matching lines @@
 }
 
 void FakeGCMDriver::AddHeartbeatInterval(const std::string& scope,
                                          int interval_ms) {
 }
 
 void FakeGCMDriver::RemoveHeartbeatInterval(const std::string& scope) {
 }
 
 }  // namespace gcm