Log runtime of StartLoadingFavicon and OnFaviconDataAvailable for
JumpList
Currently there're lots of redundant of favicon loading calls in
JumpList update. The total time cost of one favicon loading process
consists of the runtime of one StartLoadingFavicon call, one
asynchronous GetFaviconImageForPageURL call and one
OnFaviconDataAvailable call.
UMA currently knows the total amount of GetFaviconImageForPageURL
function calls and their runtime distribution. However, UMA doesn't
know its exact contribution from the JumpList update. It would be nice
to log some information from the JumpList class so that we know how
much we can possibly improve.
BUG=40407, 179576, 717236
Review-Url: https://codereview.chromium.org/2860573005
Cr-Commit-Position: refs/heads/master@{#469365}
2 files changed
