Always read .skp files and other serialized pictures into SkRecord.

Always read .skp files and other serialized pictures into SkRecord.

This should switch all our internal tools that aren't clever about it over to SkRecord pictures.  (The clever tools know what they're doing.)

Also, deletes the old SkPicture::clone() path.  return this or die.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/7b705bb17e09508e3761b54f59833b1ceb4ce9a6

Committed: https://skia.googlesource.com/skia/+/1b523babbe50df1894b10eb5a54fc9d0cf23723d

[mtklein, 2014-08-20 21:09:13]

+reed for include/

[reed1, 2014-08-20 21:10:36]

lgtm

[robertphillips, 2014-08-20 21:11:22]

lgtm

[mtklein, 2014-08-20 21:16:02]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-08-20 21:16:27]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/mtklein@chromium.org/481743003/1

[commit-bot: I haz the power, 2014-08-20 21:23:05]

Committed patchset #1 (1) as 7b705bb17e09508e3761b54f59833b1ceb4ce9a6

[mtklein, 2014-08-20 22:41:33]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-08-20 22:42:21]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/mtklein@chromium.org/481743003/20001

[commit-bot: I haz the power, 2014-08-20 22:50:53]

Committed patchset #2 (20001) as 1b523babbe50df1894b10eb5a54fc9d0cf23723d

[mtklein, 2014-08-20 23:29:38]

On 2014/08/20 22:50:53, I haz the power (commit-bot) wrote:
> Committed patchset #2 (20001) as 1b523babbe50df1894b10eb5a54fc9d0cf23723d

Mike and I looked at some profiles and we've pegged the regression down:
  - my earlier testing was whole-page with no BBH and the top-left 256x256 tile
with a tile grid.  Both those look good.
  - nanobench tests a 1000x1000 viewport with no BBH
  - SkPictureData has its own special text-only-Y-only built-in BBH, which makes
this sort of thing faster on text heavy pages.

I'm going to hack up and propose some changes to nanobench's SKP rendering
tomorrow to see if I can make things a fair comparison.  I think we should be
measuring tiles with a BBH on the bots, and am open to ideas about what other
modes to support in the tool.

Will give this another try after that's all done.