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

Review URL: https://codereview.chromium.org/762313002
Add a base class for GrIODB that handles geometry data

Review URL: https://codereview.chromium.org/773433002
Add color emoji fallback for nvpr text

BUG=skia:

Review URL: https://codereview.chromium.org/759613005