Revert of Revert of Change device creation to see the (optional) layer-paint

Revert of Revert of Change device creation to see the (optional) layer-paint (patchset #1 id:1 of https://codereview.chromium.org/1008863002/)

Reason for revert:
guard in chrome has landed

Original issue's description:
> Revert of Change device creation to see the (optional) layer-paint (patchset #9 id:160001 of https://codereview.chromium.org/988413003/)
> 
> Reason for revert:
> need to have chrome opt-in for the older API before this can land (in chrome)
> 
> Original issue's description:
> > Change device creation to see the (optional) layer-paint
> > 
> > Motivation:
> > 
> > PDFDevice currently relies on 1) being told that the layer's paint has an imagefilter, and in the case, it creates a rasterdevice. It then relies on (2) canvas itself sniffing the layer's paint and offering to apply-the-imagefilter to call drawSprite instead of drawDevice.
> > 
> > This subtle interchange is fragile, and also does not support other unsupported PDF features like colorfilters. This CL is a step toward making this use-raster-instead-of-native approach to layers more completely in the subclass' hands.
> > 
> > Committed: https://skia.googlesource.com/skia/+/1182d9a96b80bd12183ee7c81325a979a51ee0c0
> 
> TBR=halcanary@google.com,senorblanco@google.com,robertphillips@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> 
> Committed: https://skia.googlesource.com/skia/+/0e040f7da2fdfeb49aa60d24117306e3b1e6ea90

TBR=halcanary@google.com,senorblanco@google.com,robertphillips@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://skia.googlesource.com/skia/+/f7076a13e2d4269903b34ef2780e1c84723e4477

[reed1, 2015-03-13 15:45:44]

Created Revert of Revert of Change device creation to see the (optional)
layer-paint

[commit-bot: I haz the power, 2015-03-13 15:46:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1006923002/1

[commit-bot: I haz the power, 2015-03-13 15:46:15]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/f7076a13e2d4269903b34ef2780e1c84723e4477

[reed1, 2015-03-13 19:33:50]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1001423002/ by reed@google.com.

The reason for reverting is: platform_canvas tests failures

skia_unittests (with patch) skia_unittests (with patch)
PlatformCanvas.TranslateLayer failed 2
Flakiness dashboard

failures:
PlatformCanvas.TranslateLayer
PlatformCanvas.FillLayer.

[reed2, 2015-03-14 02:50:37]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1004403002/ by reed@chromium.org.

The reason for reverting is: change has landed in chrome to expose new virtuals.