Revert 164900 "Put resource timing events on a timer when trigge..."

> Put resource timing events on a timer when triggered by a cache hit.
> 
> BUG=327065
> TEST=http/tests/misc/cache-hit-resource-timing-buffer-full-crash.html
> 
> Review URL: https://codereview.chromium.org/124393005

TBR=japhet@chromium.org

Review URL: https://codereview.chromium.org/134843007

git-svn-id: svn://svn.chromium.org/blink/trunk@165000 bbb929c8-8fbe-4397-9dbb-9b2b20218538