Force path bounds in recording.

Force path bounds in recording.

The use of SKTRacy isn't safe in SkPathRef.
There are logical dependencies between the racy fields.

Doesn't seem to affect recording performance:

$ c --match skp --config nonrendering
               tabl_techmeme.skp	81.1us ->   86us	1.06x
                 desk_mapsvg.skp	1.23ms -> 1.26ms	1.02x
           desk_yahooanswers.skp	 114us ->  117us	1.02x
                tabl_sahadan.skp	70.9us ->   72us	1.02x
               desk_fontwipe.skp	31.6us ->   32us	1.01x
           tabl_cuteoverload.skp	 414us ->  419us	1.01x
             desk_mobilenews.skp	 503us ->  508us	1.01x
               desk_tigersvg.skp	 150us ->  152us	1.01x
               desk_samoasvg.skp	 608us ->  610us	1x
                   tabl_digg.skp	 636us ->  638us	1x
                 tabl_pravda.skp	 155us ->  156us	1x
     desk_jsfiddlehumperclip.skp	33.9us -> 33.9us	1x
      tabl_culturalsolutions.skp	 295us ->  295us	1x
                desk_youtube.skp	 447us ->  448us	1x
                    desk_gws.skp	 144us ->  144us	1x
               tabl_frantzen.skp	  42us ->   42us	1x
                  tabl_gspro.skp	50.1us ->   50us	1x
         tabl_googlecalendar.skp	 165us ->  165us	1x
                desk_twitter.skp	 359us ->  358us	1x
              desk_wordpress.skp	 588us ->  583us	0.99x
         desk_jsfiddlebigcar.skp	32.8us -> 32.5us	0.99x
                desk_booking.skp	 838us ->  827us	0.99x
          tabl_androidpolice.skp	1.42ms ->  1.4ms	0.99x
                desk_blogger.skp	 378us ->  372us	0.98x
                desk_wowwiki.skp	1.11ms -> 1.09ms	0.98x
                   tabl_cnet.skp	 115us ->  112us	0.97x
            desk_silkfinance.skp	57.7us -> 55.9us	0.97x
                    tabl_cnn.skp	 136us ->  131us	0.97x
                 desk_sfgate.skp	 396us ->  377us	0.95x
             tabl_deviantart.skp	 107us ->  102us	0.95x
                tabl_mozilla.skp	 1.4ms -> 1.32ms	0.94x
BUG=437511
Committed: https://skia.googlesource.com/skia/+/5c9c9be1f540e1895e65fbd244caae9135972143

[mtklein, 2014-11-29 15:37:11]

mtklein@google.com changed reviewers:
+ mtklein@google.com, reed@google.com

[reed1, 2014-12-01 14:08:45]

lgtm

[mtklein, 2014-12-01 14:46:48]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-12-01 14:47:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/762313002/40001

[commit-bot: I haz the power, 2014-12-01 15:00:01]

Committed patchset #3 (id:40001) as
https://skia.googlesource.com/skia/+/5c9c9be1f540e1895e65fbd244caae9135972143