Staging for cleanup of SkPicture-related headers

Staging for cleanup of SkPicture-related headers

This CL removes Skia's usage of the following headers (in preparation for their deletion):
  SkTileGridPicture.h
  SkQuadTreePicture.h
  SkRTreePictures.h
but stages things so clients can still compile.

It also consolidates all the SkBBHFactory-derived classes in SkBBHFactory.h and splits SkPictureRecorder into its own header.

TBR=reed@google.com

[robertphillips, 2014-04-18 16:35:15]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2014-04-18 16:35:23]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/robertphillips@google.com/243173002/6...

[commit-bot: I haz the power, 2014-04-18 16:35:36]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-18 16:35:36]

Presubmit check for 243173002-60001 failed and returned exit status 1.

Running presubmit commit checks ...

** Presubmit ERRORS **
Since the CL is editing public API, you must have an LGTM from one of:
('reed@chromium.org', 'reed@google.com', 'bsalomon@chromium.org',
'bsalomon@google.com')

[reed1, 2014-04-18 17:16:19]

lgtm

[commit-bot: I haz the power, 2014-04-18 17:16:34]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-18 17:16:34]

Internal error: failed to checkout. Please try again.

[robertphillips, 2014-04-18 17:16:50]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2014-04-18 17:16:59]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/robertphillips@google.com/243173002/6...

[commit-bot: I haz the power, 2014-04-18 17:17:07]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-18 17:17:07]

Internal error: failed to checkout. Please try again.

[robertphillips, 2014-04-18 18:05:25]

committed as r14258