gfx: Fix [de]serializing non-shm GpuMemoryBufferHandle.

gfx: Fix [de]serializing non-shm GpuMemoryBufferHandle.

GpuMemoryBufferHandle::shared_memory_handle is only valid if type is
SHARED_MEMORY_BUFFER. So try to serialize only when it's valid.

BUG=643746
Committed: https://crrev.com/b5bc501b9a49ddd997b8f7c95edf336d51d35e32
Cr-Commit-Position: refs/heads/master@{#434740}

[sadrul, 2016-11-25 05:49:57]

The CQ bit was checked by sadrul@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-11-25 05:50:12]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[sadrul, 2016-11-25 05:50:36]

sadrul@chromium.org changed reviewers:
+ tsepez@chromium.org

[sadrul, 2016-11-25 06:19:11]

The CQ bit was checked by sadrul@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-11-25 06:19:32]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-25 07:09:29]

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

[commit-bot: I haz the power, 2016-11-25 07:09:30]

Dry run: This issue passed the CQ dry run.

[Tom Sepez, 2016-11-28 17:23:10]

lgtm

[sadrul, 2016-11-28 18:01:47]

The CQ bit was checked by sadrul@chromium.org

[commit-bot: I haz the power, 2016-11-28 18:03:02]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-28 22:35:22]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1480356107819180,
"parent_rev": "a1d5d8e50a242f304e79fa4afd13254544a09caa", "commit_rev":
"d3a5e28c4c7a3144e6de8e99bea0c706cde9f227"}

[commit-bot: I haz the power, 2016-11-28 22:35:53]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-11-28 22:38:20]

Description was changed from

==========
gfx: Fix [de]serializing non-shm GpuMemoryBufferHandle.

GpuMemoryBufferHandle::shared_memory_handle is only valid if type is
SHARED_MEMORY_BUFFER. So try to serialize only when it's valid.

BUG=643746
==========

to

==========
gfx: Fix [de]serializing non-shm GpuMemoryBufferHandle.

GpuMemoryBufferHandle::shared_memory_handle is only valid if type is
SHARED_MEMORY_BUFFER. So try to serialize only when it's valid.

BUG=643746

Committed: https://crrev.com/b5bc501b9a49ddd997b8f7c95edf336d51d35e32
Cr-Commit-Position: refs/heads/master@{#434740}
==========

[commit-bot: I haz the power, 2016-11-28 22:38:21]

Patchset 2 (id:??) landed as
https://crrev.com/b5bc501b9a49ddd997b8f7c95edf336d51d35e32
Cr-Commit-Position: refs/heads/master@{#434740}