Add SkCodec::FrameInfo::fFullyReceived

This indicates whether the frame has been fully received, i.e. the
stream contains enough data to decode to the end of the frame.

A client may want to use this to know whether they should attempt to
decode this frame, if they do not want to decode partial frames.

Change-Id: I336c7031b0c0b8c1401ce040f5372aedc87fdc14
Reviewed-on: https://skia-review.googlesource.com/5703
Reviewed-by: Chris Blume <cblume@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
3 files changed