Call logging::InitLogging. The lack of this was causing some hangs (and poss...

base/perftimer.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef BASE_PERFTTIMER_H_
 #define BASE_PERFTTIMER_H_
 
 #include <string>
 #include "base/basictypes.h"
+#include "base/file_path.h"
 #include "base/time.h"
 
 // ----------------------------------------------------------------------
 // Initializes and finalizes the perf log. These functions should be
 // called at the beginning and end (respectively) of running all the
 // performance tests. The init function returns true on success.
 // ----------------------------------------------------------------------
-bool InitPerfLog(const char* log_file);
+bool InitPerfLog(const FilePath& log_path);
 void FinalizePerfLog();
 
 // ----------------------------------------------------------------------
 // LogPerfResult
 //   Writes to the perf result log the given 'value' resulting from the
 //   named 'test'. The units are to aid in reading the log by people.
 // ----------------------------------------------------------------------
 void LogPerfResult(const char* test_name, double value, const char* units);
 
 // ----------------------------------------------------------------------
@@ skipping 43 matching lines @@
     logged_ = true;
   }
 
  private:
   bool logged_;
   std::string test_name_;
   PerfTimer timer_;
 };
 
 #endif  // BASE_PERFTTIMER_H_