Export (SK_API) SkSurfaceProps

R=reed@google.com

Review URL: https://codereview.chromium.org/693973003
Manually load CONDITION_VARIABLE methods on Windows, checking for failure (XP).

Tested by running DM on XP.  Before this patch, it fails at startup (even just out/Debug/dm --help).  Now it asserts for other reasons later on in user code, which is just fine by me.

The net effect is that SkTaskGroups will always be synchronous on XP.  That's not ideal, but a step up from crashing.

CQ_EXTRA_TRYBOTS=client.skia:Test-Win7-ShuttleA-HD2000-x86-Release-Trybot,Test-Win7-ShuttleA-HD2000-x86_64-Release-Trybot

BUG=skia:

Review URL: https://codereview.chromium.org/700683002
Turn SkTaskGroups back on.

Revert "Disable SkTaskGroup in SkMultiPictureDraw temporarily."
Revert "Revert harder, removing SkTaskGroup.cpp from core temporarily."

NOTREECHECKS=true

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/2100c5ed7a5e5470a04e7af7309d8bd3fc4249f7

Review URL: https://codereview.chromium.org/687263007
update baselines and ignores for texture_domain

TBR=
BUG=skia:

Review URL: https://codereview.chromium.org/697233003