ksv: Change when the startup-time is reported.

Instead of reporting the time to request the Widget to be visible,
report the time when the widget actually shows up on screen. So this
includes the time spent on, for example, View::Paint() etc.

BUG=865295

Change-Id: I040878e6f897b066102608e32ba3cd6d353b01d0
Reviewed-on: https://chromium-review.googlesource.com/1143603
Reviewed-by: Tao Wu <wutao@chromium.org>
Commit-Queue: Sadrul Chowdhury <sadrul@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576558}
2 files changed