Added varying struct

Added varying struct

TBR=
BUG=skia:

Committed: https://skia.googlesource.com/skia/+/852ae80b9c3c6fd53f993ac35133d80863993cbe

Committed: https://skia.googlesource.com/skia/+/74077b9941ed3f73d92ba978ef29bf3e6f630cbc

[joshualitt, 2014-10-22 18:58:19]

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

[joshualitt, 2014-10-22 18:58:20]

This cl is a new technique for adding varyings between shader stages.  The heart
of the change is in program builder, the rest of the touched files are just
updating GPs to the new technique.

[joshualitt, 2014-10-23 20:07:39]

feedback incorporated

[joshualitt, 2014-10-23 20:08:22]

https://codereview.chromium.org/671023002/diff/80001/src/gpu/gl/builders/GrGL...
File src/gpu/gl/builders/GrGLFragmentShaderBuilder.h (right):

https://codereview.chromium.org/671023002/diff/80001/src/gpu/gl/builders/GrGL...
src/gpu/gl/builders/GrGLFragmentShaderBuilder.h:104: 
whoops, I'll make this private

[joshualitt, 2014-10-24 00:54:16]

The CQ bit was checked by joshualitt@google.com

[commit-bot: I haz the power, 2014-10-24 00:55:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/671023002/140001

[commit-bot: I haz the power, 2014-10-24 00:55:30]

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 2014-10-24 06:55 UTC

[commit-bot: I haz the power, 2014-10-24 00:55:38]

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

[commit-bot: I haz the power, 2014-10-24 00:55:39]

Presubmit check for 671023002-140001 failed and returned exit status 1.

Running presubmit commit checks ...

** Presubmit ERRORS **
Since the CL is editing public API, you must have an LGTM from one of:
('reed@chromium.org', 'reed@google.com', 'bsalomon@chromium.org',
'bsalomon@google.com', 'djsollen@chromium.org', 'djsollen@google.com')

[joshualitt, 2014-10-24 01:12:30]

The CQ bit was checked by joshualitt@google.com

[commit-bot: I haz the power, 2014-10-24 01:14:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/671023002/140001

[commit-bot: I haz the power, 2014-10-24 01:14:27]

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

[commit-bot: I haz the power, 2014-10-24 01:14:28]

Presubmit check for 671023002-140001 failed and returned exit status 1.

Running presubmit commit checks ...

** Presubmit ERRORS **
Since the CL is editing public API, you must have an LGTM from one of:
('reed@chromium.org', 'reed@google.com', 'bsalomon@chromium.org',
'bsalomon@google.com', 'djsollen@chromium.org', 'djsollen@google.com')

[joshualitt, 2014-10-24 14:03:25]

On 2014/10/24 01:14:28, I haz the power (commit-bot) wrote:
> Presubmit check for 671023002-140001 failed and returned exit status 1.
> 
> Running presubmit commit checks ...
> 
> ** Presubmit ERRORS **
> Since the CL is editing public API, you must have an LGTM from one of:
> (mailto:, mailto:, mailto:,
> mailto:, mailto:, mailto:)

Brian, can you lgtm?  Thanks!

[bsalomon, 2014-10-24 14:05:18]

lgtm

[joshualitt, 2014-10-24 14:05:58]

The CQ bit was checked by joshualitt@google.com

[commit-bot: I haz the power, 2014-10-24 14:06:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/671023002/140001

[commit-bot: I haz the power, 2014-10-24 14:07:46]

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

[commit-bot: I haz the power, 2014-10-24 14:07:48]

Try jobs failed on following builders:
  Build-Ubuntu13.10-Clang-x86_64-Debug-Trybot on client.skia.compile
(http://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu13.10-Cl...)

[joshualitt, 2014-10-24 14:15:20]

The CQ bit was checked by joshualitt@google.com

[commit-bot: I haz the power, 2014-10-24 14:16:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/671023002/160001

[commit-bot: I haz the power, 2014-10-24 14:56:09]

Committed patchset #9 (id:160001) as 852ae80b9c3c6fd53f993ac35133d80863993cbe

[joshualitt, 2014-10-24 15:23:09]

A revert of this CL (patchset #9 id:160001) has been created in
https://codereview.chromium.org/675193002/ by joshualitt@google.com.

The reason for reverting is: may have caused gm change on arm.

[joshualitt, 2014-10-24 18:15:54]

The CQ bit was checked by joshualitt@google.com

[commit-bot: I haz the power, 2014-10-24 18:16:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/671023002/200001

[commit-bot: I haz the power, 2014-10-24 18:26:09]

Committed patchset #11 (id:200001) as 74077b9941ed3f73d92ba978ef29bf3e6f630cbc