Add process start time and CPU time columns to task manager

base/i18n/time_formatting.h

Index: base/i18n/time_formatting.h
diff --git a/base/i18n/time_formatting.h b/base/i18n/time_formatting.h
index 761dd98a5d427e8441b7b17405be2dcb39933a6b..b31be6c6fc1143568d01a792a9a072d74cdc81ab 100644
--- a/base/i18n/time_formatting.h
+++ b/base/i18n/time_formatting.h
@@ -80,6 +80,13 @@ BASE_I18N_EXPORT string16 TimeFormatFriendlyDate(const Time& time);
 BASE_I18N_EXPORT string16 TimeDurationFormat(const TimeDelta& time,
                                              const DurationFormatWidth width);
 
+// Formats a time duration of hours, minutes and seconds into various formats,
+// e.g., "3:07:30" or "3 hours, 7 minutes, 30 seconds". See DurationFormatWidth
+// for details.
+BASE_I18N_EXPORT string16
+TimeDurationWFormatWithSecondPrecison(const TimeDelta& time,

[brucedawson, 2016/12/19 21:51:05]

Why 'W'Format?

Also, consider FormatWithSeconds instead of FormatWithSecondPrecision. Just my
opinion though, so feel free to ignore or let Stan decide.

[stanisc, 2016/12/19 22:44:10]

What about sub-second precision? Should we consider that?

[chengx, 2016/12/20 00:51:12]

I vote for "WithSeconds", as the other one is "WithMinutes" basically though it
is not mentioned in the function name.

[chengx, 2016/12/20 00:51:12]

Done.

+                                      const DurationFormatWidth width);
+
 // Gets the hour clock type of the current locale. e.g.
 // k12HourClock (en-US).
 // k24HourClock (en-GB).