Cleanup: Remove submit_try script.

It is probably broken, and by now nobody should be using it really
anyway.

BUG=None
R=borenet@google.com

Review URL: https://codereview.chromium.org/720603002
rebase

TBR=
BUG=skia:

Review URL: https://codereview.chromium.org/717033002
Move SkRecordComputeLayers and CollectLayers into SkRecordDraw.cpp

Rather then exposing parts of FillBounds (as in Expose FillBounds to allow GrPictureUtils::CollectLayers to be layered on top of it - https://codereview.chromium.org/698643002/), this CL moves CollectLayers into SkRecordDraw.cpp to accomplish the layering.

Review URL: https://codereview.chromium.org/716913003