Remove unused code in VulkanSwapChain.

Remove unused code in VulkanSwapChain.

BUG=582558
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel

Committed: https://crrev.com/942905439e5f5c77b9868e373841df8bb7cdff97
Cr-Commit-Position: refs/heads/master@{#389831}

[sohanjg, 2016-04-26 14:34:56]

Description was changed from

==========
Remove unused code in VulkanSwapChain.

BUG=582558
==========

to

==========
Remove unused code in VulkanSwapChain.

BUG=582558
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel
==========

[sohanjg, 2016-04-26 14:37:07]

sohan.jyoti@samsung.com changed reviewers:
+ dyen@chromium.org, piman@chromium.org

[sohanjg, 2016-04-26 14:37:07]

Please take a look, i hope image_subresource_range was not kept for future use
in SwapBuffers ?
This was hitting a compilation error.
Thanks.

[piman, 2016-04-26 16:14:41]

lgtm

[sohanjg, 2016-04-26 18:04:48]

The CQ bit was checked by sohan.jyoti@samsung.com

[commit-bot: I haz the power, 2016-04-26 18:05:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1922883002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1922883002/1

[commit-bot: I haz the power, 2016-04-26 18:58:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-26 19:01:27]

Description was changed from

==========
Remove unused code in VulkanSwapChain.

BUG=582558
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel
==========

to

==========
Remove unused code in VulkanSwapChain.

BUG=582558
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel

Committed: https://crrev.com/942905439e5f5c77b9868e373841df8bb7cdff97
Cr-Commit-Position: refs/heads/master@{#389831}
==========

[commit-bot: I haz the power, 2016-04-26 19:01:28]

Patchset 1 (id:??) landed as
https://crrev.com/942905439e5f5c77b9868e373841df8bb7cdff97
Cr-Commit-Position: refs/heads/master@{#389831}