message: Use InfoLog to report perftest results.
  On Android printing to stdout doesn't show in logcat. Use InfoLog
  instead of fprintf(stdout) so that the message get routed to
  android_log.
diff: @@ -385,10 +385,8 @@ void DawnPerfTestBase::PrintResult(const std::string& trace,
  // The results are printed according to the format specified at
  // [chromium]//build/scripts/slave/performance_log_processor.py
  - fflush(stdout);
  - printf("%sRESULT %s%s: %s= %s%f%s %s\n", important ? "*" : "", testSuite, testName,
  - trace.c_str(), "", value, "", units.c_str());
  - fflush(stdout);
  + dawn::InfoLog() << (important ? "*" : "") << "RESULT " << testSuite << testName << ": " << trace
  + << "= " << value << " " << units;
  }
  void DawnPerfTestBase::PrintResult(const std::string& trace,
  @@ -403,8 +401,6 @@ void DawnPerfTestBase::PrintResult(const std::string& trace,
  // The results are printed according to the format specified at
  // [chromium]//build/scripts/slave/performance_log_processor.py
  - fflush(stdout);
  - printf("%sRESULT %s%s: %s= %s%u%s %s\n", important ? "*" : "", testName, testSuite,
  - trace.c_str(), "", value, "", units.c_str());
  - fflush(stdout);
  + dawn::InfoLog() << (important ? "*" : "") << "RESULT " << testSuite << testName << ": " << trace
  + << "= " << value << " " << units;
  }
  