commit 1c005e4a38e29d648ecebada25d3a718155043a3
author scroggo <scroggo@chromium.org> Tue Aug 04 09:24:45 2015 -0700
committer Commit bot <commit-bot@chromium.org> Tue Aug 04 09:24:45 2015 -0700
tree ccc10aa351e4c58f9ffcd53b849d9a5afc46c28b
parent ddc726f1de09426557983361a0e7838a83612315

Create a scanline decoder without creating a codec

Prior to this CL, if a client wanted to decode scanlines, they had to
create an SkCodec in order to get an SkScanlineDecoder. This introduces
complications if input data is not easily shared between the two
objects.

Instead, add methods to SkScanlineDecoder for creating a new one from
input data, and remove the creation functions from SkCodec.

Update DM and tests.

Review URL: https://codereview.chromium.org/1267583002