Make base::Base64Encode() return void

sync/tools/null_invalidation_state_tracker.cc

 // Copyright (c) 2012 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 "sync/tools/null_invalidation_state_tracker.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/location.h"
@@ skipping 20 matching lines @@
   NOTREACHED() << "This state tracker does not support reflection-blocking";
   return std::string();
 }
 
 std::string NullInvalidationStateTracker::GetBootstrapData() const {
   return std::string();
 }
 
 void NullInvalidationStateTracker::SetBootstrapData(const std::string& data) {
   std::string base64_data;
-  CHECK(base::Base64Encode(data, &base64_data));
+  base::Base64Encode(data, &base64_data);
   LOG(INFO) << "Setting bootstrap data to: " << base64_data;
 }
 
 void NullInvalidationStateTracker::Clear() {
   // We have no members to clear.
 }
 
 void NullInvalidationStateTracker::SetSavedInvalidations(
     const UnackedInvalidationsMap& states) {
   // Do nothing.
 }
 
 UnackedInvalidationsMap
 NullInvalidationStateTracker::GetSavedInvalidations() const {
   return UnackedInvalidationsMap();
 }
 
 }  // namespace syncer