Add EXPERIMENTAL_beginRecording() for SkRecord-based recording.

Add EXPERIMENTAL_beginRecording() for SkRecord-based recording.

The interesting stuff is in SkPictureRecorder.{h,cpp}.  The rest is mostly moving SkRecord from its own directories into core to avoid circular dependencies in GYP.

After plumbing SkRecord all the way through in Picture, I'll delete its old entry point include/record/SkRecording.h.  For now it and record.gypi need to stay where they are to keep Chrome building.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/887f3979f0c717e69a8b7d169169bc27eb46d3b5

[mtklein_C, 2014-06-17 18:24:00]

This adds one new public method, EXPERIMENTAL_beginRecording() to
SkPictureRecorder.

[mtklein, 2014-06-17 18:27:06]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-06-17 18:27:45]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/mtklein@chromium.org/331573004/20001

[commit-bot: I haz the power, 2014-06-17 18:27:46]

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

[commit-bot: I haz the power, 2014-06-17 18:27:47]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[reed1, 2014-06-17 18:40:24]

lgtm

[mtklein, 2014-06-17 18:41:19]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-06-17 18:41:51]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/mtklein@chromium.org/331573004/20001

[commit-bot: I haz the power, 2014-06-17 19:08:20]

Change committed as 887f3979f0c717e69a8b7d169169bc27eb46d3b5