This fixes a number of things that are warnings in the Mac compiler....

statsreport/uploader_aggregation-posix.cc

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 49 matching lines @@
 }
 
 
 bool ReportMetrics(MetricsAggregatorPosix *aggregator,
                    const char* extra_url_data,
                    const char* user_agent,
                    uint32 interval) {
   Formatter formatter(PRODUCT_NAME_STRING, interval);
   aggregator->FormatMetrics(&formatter);
 
-  return UploadMetrics(extra_url_data, user_agent, formatter.output());
+  DLOG(INFO) << "formatter.output() = " << formatter.output();
+  return UploadMetrics(extra_url_data, user_agent, formatter.output().c_str());
 }
 
 }  // namespace
 
 namespace stats_report {
 
 bool AggregateMetrics() {
   MetricsAggregatorPosix aggregator(g_global_metrics);
   return ::AggregateMetrics(&aggregator);
 }
@@ skipping 60 matching lines @@
     // No matter what, wait another upload interval to try again. It's better
     // to report older stats than hammer on the stats server exactly when it's
     // failed.
     (void)aggregator.SetValue(kLastTransmissionTimeValueName, now);
     return report_result;
   }
   return false;
 }
 
 }  // namespace stats_report