Remove GrContextFactory::getGLContext

Remove GrContextFactory::getGLContext

Remove GrContextFactory::getGLContext, it is problematic:

It has the bug of not checking for the context type.

It also is error-prone, since the GL context is not made
current, but it is callers may assume it is current.

It is also not used very much.

Clients can use GrContextFactory::getContextInfo.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/5931922997b8904b1243240120014c016064b9fa

[Kimmo Kinnunen, 2015-11-18 13:09:21]

kkinnunen@nvidia.com changed reviewers:
+ bsalomon@google.com

[Kimmo Kinnunen, 2015-11-18 13:50:52]

On 2015/11/18 13:09:22, Kimmo Kinnunen wrote:

Ah, taking refs of factory-created objects in picturerenderer is wrong.. I'll
fix it tomorrow. Feel free to comment how you feel about removing the function.
Alternatives would include changing the semantics to create+securrent or just
leave it be and fix the bugs

[bsalomon, 2015-11-18 15:04:31]

lgtm

[Kimmo Kinnunen, 2015-11-23 06:50:17]

The CQ bit was checked by kkinnunen@nvidia.com

[Kimmo Kinnunen, 2015-11-23 06:50:18]

The patchset sent to the CQ was uploaded after l-g-t-m from bsalomon@google.com
Link to the patchset: https://chromiumcodereview.appspot.com/1455093003/#ps20001
(title: "rebase")

[commit-bot: I haz the power, 2015-11-23 06:50:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1455093003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1455093003/20001

[commit-bot: I haz the power, 2015-11-23 06:51:09]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-11-23 06:51:09]

Try jobs failed on following builders:
  Build-Ubuntu-GCC-x86_64-Release-Trybot on client.skia.compile (JOB_FAILED,
http://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-GCC-x86...)

[Kimmo Kinnunen, 2015-11-23 07:10:57]

The CQ bit was checked by kkinnunen@nvidia.com

[Kimmo Kinnunen, 2015-11-23 07:10:57]

The patchset sent to the CQ was uploaded after l-g-t-m from bsalomon@google.com
Link to the patchset: https://chromiumcodereview.appspot.com/1455093003/#ps40001
(title: "rebase")

[commit-bot: I haz the power, 2015-11-23 07:11:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1455093003/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1455093003/40001

[commit-bot: I haz the power, 2015-11-23 07:23:57]

Committed patchset #3 (id:40001) as
https://skia.googlesource.com/skia/+/5931922997b8904b1243240120014c016064b9fa

[Kimmo Kinnunen, 2015-11-23 08:14:52]

On 2015/11/23 07:23:57, commit-bot: I haz the power wrote:
> Committed patchset #3 (id:40001) as
> https://skia.googlesource.com/skia/+/5931922997b8904b1243240120014c016064b9fa

Causes a dm failure that would be fixed with following commit:
https://codereview.chromium.org/1464283002