[15532:26456:0828/201518.091:VERBOSE1:base\metrics\statistics_recorder.cc:608] Collections of all histograms
Histogram: Chrome.ProcessSingleton.NotifyResult recorded 1 samples, mean = 1.0 (flags = 0x41)
0  O                                                                         (0 = 0.0%)
1  -O                                                                        (1 = 100.0%) {0.0%}
2  ... 

Histogram: Chrome.ProcessSingleton.TimeToNotify recorded 1 samples, mean = 0.0 (flags = 0x41)
0  -O                                                                        (1 = 100.0%)
10 ... 

Histogram: Startup.LoadTime.RecordedProcessCreation recorded 1 samples, mean = 1.0 (flags = 0x1)
0  O                                                                         (0 = 0.0%)
1  -O                                                                        (1 = 100.0%) {0.0%}
2  O                                                                         (0 = 0.0%) {100.0%}

Histogram: UMA.PersistentAllocator.BrowserMetrics.UsedPct recorded 0 samples (flags = 0x41)
0 ... 

Histogram: UMA.PersistentAllocator.EarlyHistograms.BrowserMetrics recorded 1 samples, mean = 1.0 (flags = 0x41)
0  O                                                                         (0 = 0.0%)
1  -O                                                                        (1 = 100.0%) {0.0%}
2  ... 

Histogram: UMA.PersistentHistograms.InitResult recorded 1 samples, mean = 2.0 (flags = 0x41)
0  ... 
2  -O                                                                        (1 = 100.0%) {0.0%}
3  ...