Iterate over instanced draws in GrGpu rather than above GrBatchTarget

Iterate over instanced draws in GrGpu rather than above GrBatchTarget

Committed: https://skia.googlesource.com/skia/+/e64eb570a5b9480bc24d0656ccabcff1ab13a229

[bsalomon, 2015-05-07 17:44:19]

The CQ bit was checked by bsalomon@google.com

[commit-bot: I haz the power, 2015-05-07 17:44:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1127273007/40001

[commit-bot: I haz the power, 2015-05-07 17:44:44]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2015-05-07 23:44 UTC

[joshualitt, 2015-05-07 17:45:16]

On 2015/05/07 17:44:44, I haz the power (commit-bot) wrote:
> Note for Reviewers:
> The CQ is waiting for an approval.
> If you believe that the CL is not ready yet, or if you would like to L-G-T-M
> with comments then please uncheck the CQ checkbox.
> 
> Waiting for LGTM from valid reviewer(s) till 2015-05-07 23:44 UTC

LGTM

[commit-bot: I haz the power, 2015-05-07 17:46:09]

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

[commit-bot: I haz the power, 2015-05-07 17:46:10]

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

[bsalomon, 2015-05-07 17:53:27]

The CQ bit was checked by bsalomon@google.com

[bsalomon, 2015-05-07 17:53:28]

The patchset sent to the CQ was uploaded after l-g-t-m from
joshualitt@google.com
Link to the patchset: https://codereview.chromium.org/1127273007/#ps60001
(title: "shut clang up")

[commit-bot: I haz the power, 2015-05-07 17:53:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1127273007/60001

[commit-bot: I haz the power, 2015-05-07 17:58:18]

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

[commit-bot: I haz the power, 2015-05-07 17:58:19]

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

[bsalomon, 2015-05-07 18:00:00]

The CQ bit was checked by bsalomon@google.com

[bsalomon, 2015-05-07 18:00:01]

The patchset sent to the CQ was uploaded after l-g-t-m from
joshualitt@google.com
Link to the patchset: https://codereview.chromium.org/1127273007/#ps80001
(title: "remove dead code")

[commit-bot: I haz the power, 2015-05-07 18:00:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1127273007/80001

[commit-bot: I haz the power, 2015-05-07 18:36:00]

Committed patchset #5 (id:80001) as
https://skia.googlesource.com/skia/+/e64eb570a5b9480bc24d0656ccabcff1ab13a229