color: Clarify default behaviors
Change YUVDrawFrame to use REC709 if no valid color space is
specified.
Make ColorTransform do nothing if the source color space is invalid.
Add a method for constructing video color spaces, CreateVideo, which
does translation from h264 spec values to gfx::ColorSpace values. For
now, leave all values in existence, though they can likely be removed
in the future.
Change the media/ callers that used to static-cast h264 values to use
this constructor.
Change the ColorSpace PrimaryID/TransferID/MatrixID to not exactly
match the h264 spec (offset by 1000) to discourage doing static
casts.
Add a method to query the h264 values for casting.
Change vp9 to always specify a color space to its frame, even when
one is not known.
BUG=691522
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel
Review-Url: https://codereview.chromium.org/2697863003
Cr-Commit-Position: refs/heads/master@{#451151}
13 files changed
