Move impl of stroke rect batch from h to cpp

Move impl of stroke rect batch from h to cpp

Committed: https://skia.googlesource.com/skia/+/0e8296eaa62eb8bc37b3ffc78523183f15dfc0d1

[bsalomon, 2015-08-05 17:41:13]

bsalomon@google.com changed reviewers:
+ joshualitt@google.com

[bsalomon, 2015-08-05 17:41:16]

The CQ bit was checked by bsalomon@google.com

[commit-bot: I haz the power, 2015-08-05 17:41:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1275633003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1275633003/20001

[commit-bot: I haz the power, 2015-08-05 17:41:29]

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 2015-08-05 23:41 UTC

[joshualitt, 2015-08-05 17:47:45]

On 2015/08/05 17:41:29, commit-bot: I haz the power 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 2015-08-05 23:41 UTC

lgtm

[commit-bot: I haz the power, 2015-08-05 17:50:04]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/0e8296eaa62eb8bc37b3ffc78523183f15dfc0d1