Add timing to dump_record.

Prints microsecond timing for each command in the left-hand column:

optimized flat/http___mobile_news_sandbox_google_com_news_pt0_scroll_layer_7.skp
   4.0   1 Save
2075.0   2      DrawRect
 104.0   3      BoundedDrawPosTextH
 135.4   4      DrawRect
   9.4   5      DrawRect
   5.6   6      DrawRect
   8.2   7      DrawRect
   6.8   8      DrawRect
...

(I'm sure Rietveld will just mangle the crap out of that.  It's helpfully right-aligned.)

To do this, I made Draw from SkRecordDraw Skia-public as SkRecords::Draw,
and time it command-by-command.

BUG=skia:2378
R=fmalita@chromium.org, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/272723007

git-svn-id: http://skia.googlecode.com/svn/trunk@14672 2bbb7eff-a529-9590-31e7-b0007b416f81
4 files changed