Revert 165918 "Remove the recalc style timer"

> Remove the recalc style timer
> 
> This CL removes the recalc style time and instead drives style recalcuation off
> of requestAnimationFrame. Previously, the recalc timer might fire in the middle
> of a frame, which could cause us to recalc style twice: once in the middle of
> the frame and again just before putting up the frame. Driving recalc using
> requestAnimationFrame avoids this problem by deferring scheduled recalcs until
> it's time to put up the frame.
> 
> Review URL: https://codereview.chromium.org/145133006

I became nervous this was causing failures in:

PasswordAutofillAgentTest.InlineAutocomplete,
BrowserPluginTest.ResizeFlowControl

TBR=abarth@chromium.org

Review URL: https://codereview.chromium.org/148293007

git-svn-id: svn://svn.chromium.org/blink/trunk@165934 bbb929c8-8fbe-4397-9dbb-9b2b20218538