ProcessMetrics::GetIdleWakeupsPerSecond() isn't implemented on Windows and thus
shouldn't be used. Running a local build produces the following log:

[30072:22996:1026/150355.245:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150355.245:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150355.245:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150355.245:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150355.245:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150355.245:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150355.246:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150355.246:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150355.246:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150355.247:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150555.246:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150555.247:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150555.250:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150555.251:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150555.252:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150555.253:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150555.254:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150555.255:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150555.256:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED
[30072:22996:1026/150555.257:ERROR:process_metrics.cc(109)] NOT IMPLEMENTED

Which is extremely noisy, it also seems wrong to call this function every
seconds.