Reland of change all factories to return their base-class

Reland of change all factories to return their base-class (patchset #1 id:1 of https://codereview.chromium.org/1540203002/ )

Reason for revert:
chrome changes have landed

Original issue's description:
> Revert of change all factories to return their base-class (patchset #1 id:1 of https://codereview.chromium.org/1535353002/ )
> 
> Reason for revert:
> need to update some chrome/blink call-sites
> 
> Original issue's description:
> > change all factories to return their base-class
> > 
> > will watch DEPS roll to see if there are chrome sites needing updates
> > 
> > BUG=skia:
> > GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1535353002
> > 
> > TBR=
> > 
> > Committed: https://skia.googlesource.com/skia/+/d63f60a36327e9580861205ebb35cade8c49bd34
> 
> TBR=
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
> 
> Committed: https://skia.googlesource.com/skia/+/2d6ba6690f8951e152d8e793191b14afd52f5506

TBR=
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed: https://skia.googlesource.com/skia/+/5e1ddb108638d1d51a3940fcae1dd23adc5ac53b

[reed2, 2015-12-21 16:52:23]

Created Reland of change all factories to return their base-class

[commit-bot: I haz the power, 2015-12-21 16:52:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1533373002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1533373002/1

[commit-bot: I haz the power, 2015-12-21 16:52:47]

Description was changed from

==========
Reland of change all factories to return their base-class (patchset #1 id:1 of
https://codereview.chromium.org/1540203002/ )

Reason for revert:
chrome changes have landed

Original issue's description:
> Revert of change all factories to return their base-class (patchset #1 id:1 of
https://codereview.chromium.org/1535353002/ )
> 
> Reason for revert:
> need to update some chrome/blink call-sites
> 
> Original issue's description:
> > change all factories to return their base-class
> > 
> > will watch DEPS roll to see if there are chrome sites needing updates
> > 
> > BUG=skia:
> > GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
> > 
> > TBR=
> > 
> > Committed:
https://skia.googlesource.com/skia/+/d63f60a36327e9580861205ebb35cade8c49bd34
> 
> TBR=
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
> 
> Committed:
https://skia.googlesource.com/skia/+/2d6ba6690f8951e152d8e793191b14afd52f5506

TBR=
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:
==========

to

==========
Reland of change all factories to return their base-class (patchset #1 id:1 of
https://codereview.chromium.org/1540203002/ )

Reason for revert:
chrome changes have landed

Original issue's description:
> Revert of change all factories to return their base-class (patchset #1 id:1 of
https://codereview.chromium.org/1535353002/ )
> 
> Reason for revert:
> need to update some chrome/blink call-sites
> 
> Original issue's description:
> > change all factories to return their base-class
> > 
> > will watch DEPS roll to see if there are chrome sites needing updates
> > 
> > BUG=skia:
> > GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
> > 
> > TBR=
> > 
> > Committed:
https://skia.googlesource.com/skia/+/d63f60a36327e9580861205ebb35cade8c49bd34
> 
> TBR=
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
> 
> Committed:
https://skia.googlesource.com/skia/+/2d6ba6690f8951e152d8e793191b14afd52f5506

TBR=
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed:
https://skia.googlesource.com/skia/+/5e1ddb108638d1d51a3940fcae1dd23adc5ac53b
==========

[commit-bot: I haz the power, 2015-12-21 16:52:47]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/5e1ddb108638d1d51a3940fcae1dd23adc5ac53b