Break Sky's dependency on cc

Break Sky's dependency on cc

We no longer link with cc. Instead, we use a simple, direct-to-Ganesh rendering
pipeline.

R=esprehn@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/eb7c1b9a29c37635cf92afa1894b775785f2003a

[abarth-chromium, 2014-11-21 20:10:27]

abarth@chromium.org changed reviewers:
+ esprehn@chromium.org, ojan@chromium.org, rafaelw@chromium.org

[esprehn, 2014-11-21 20:14:02]

Crazy, this means we now raster on the main thread right? It also looks like
we're not recording to SkPicture anymore we directly render the pixels in the
paint() phase?

[esprehn, 2014-11-21 20:14:08]

lgtm

[abarth-chromium, 2014-11-21 20:18:42]

On 2014/11/21 at 20:14:02, esprehn wrote:
> Crazy, this means we now raster on the main thread right?

The translation from Skia calls to GL calls happens on the main thread.  The GL
calls are actually given to the driver on the GPU thread.

> It also looks like we're not recording to SkPicture anymore we directly render
the pixels in the paint() phase?

Correct.  We're not using SkPicture.  We're drawing into an immediate-mode
SkCanvas.  We don't actually directly produce the pixels on the main thread. 
The GL commands go to the GPU thread, then to the GPU, and then finally pixels
are produced.

[abarth-chromium, 2014-11-21 20:21:44]

Committed patchset #1 (id:1) manually as
eb7c1b9a29c37635cf92afa1894b775785f2003a (presubmit successful).