Revert 194220 "[Telemetry] Make page cyclers more telemetric."

Revert 194220 "[Telemetry] Make page cyclers more telemetric."

Caused page cycler to hang on bots.

> [Telemetry] Make page cyclers more telemetric.
> 
> This causes the page cyclers to use page_sets instead of just navigating to the
> start page and letting the pages cycle themselves. This means we'll be using
> Telemetry "properly" which will allow us to record new page sets to update the
> page cyclers and it means that page cycler page sets are interchangeable with
> other benchmarks.
> 
> The page cyclers still measure the same thing as they measured previously: the
> time to load the page and perform a layout. However, they measure it differently
> now. Instead of setting a new Date().getTime() in the cookie immediately before
> navigating and then grabbing the finish Date in the onload handler, this now
> just grabs performance.now() in the onload handler. This returns the number of
> milliseconds since navigationStart where navigation start is the same as the
> immediately before navigation time marked before. I've verified locally that the
> times reported are consistent, and will monitor the bots to verify.
> 
> This involved moving the serving_dirs property up from the page to the page_set.
> 
> BUG=None
> TEST=All page cyclers on linux and morejs on windows
> NOTRY=True
> 
> Review URL: https://codereview.chromium.org/13817009

TBR=tonyg@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=194260

[tonyg, 2013-04-16 00:15:25]

Committed patchset #1 manually as r194260.