Do not create GCM store if it is not needed

google_apis/gcm/tools/mcs_probe.cc

 // Copyright 2013 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.
 //
 // A standalone tool for testing MCS connections and the MCS client on their
 // own.
 
 #include <cstddef>
 #include <cstdio>
 #include <string>
@@ skipping 289 matching lines @@
   gcm_store_.reset(
       new GCMStoreImpl(gcm_store_path_,
                        file_thread_.message_loop_proxy(),
                        make_scoped_ptr<Encryptor>(new FakeEncryptor)));
   mcs_client_.reset(new MCSClient("probe",
                                   &clock_,
                                   connection_factory_.get(),
                                   gcm_store_.get(),
                                   &recorder_));
   run_loop_.reset(new base::RunLoop());
-  gcm_store_->Load(base::Bind(&MCSProbe::LoadCallback,
+  gcm_store_->Load(GCMStore::CREATE_NEW_STORE_IF_NOT_EXISTS,
+                   base::Bind(&MCSProbe::LoadCallback,
                               base::Unretained(this)));
   run_loop_->Run();
 }
 
 void MCSProbe::LoadCallback(scoped_ptr<GCMStore::LoadResult> load_result) {
   DCHECK(load_result->success);
   if (android_id_ != 0 && secret_ != 0) {
     DVLOG(1) << "Presetting MCS id " << android_id_;
     load_result->device_android_id = android_id_;
     load_result->device_security_token = secret_;
@@ skipping 173 matching lines @@
 
   return 0;
 }
 
 }  // namespace
 }  // namespace gcm
 
 int main(int argc, char* argv[]) {
   return gcm::MCSProbeMain(argc, argv);
 }