OnSwapBuffersComplete in GpuSurfacelessBrowserCompositorOutputSurface is never called.

OnSwapBuffersComplete in GpuSurfacelessBrowserCompositorOutputSurface is never called.

In OnSwapBuffersComplete we call PageFlipComplete in BufferQueue, which ensures
the buffers are recycled properly.
However, GpuSurfacelessBrowserCompositorOutputSurface::OnSwapBuffersComplete is
never called as GpuBrowserCompositorOutputSurface directly calls the base class
implementation. This CL fixes it.

BUG=380861
Committed: https://crrev.com/4c65a7f95d9d37808d89c586d5f1a47147cb67db
Cr-Commit-Position: refs/heads/master@{#302479}

[kalyank, 2014-11-01 13:18:20]

kalyan.kondapally@intel.com changed reviewers:
+ ccameron@chromium.org

[no sievers, 2014-11-03 18:32:37]

lgtm

[kalyank, 2014-11-03 19:33:14]

The CQ bit was checked by kalyan.kondapally@intel.com

[commit-bot: I haz the power, 2014-11-03 19:34:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/697823002/1

[commit-bot: I haz the power, 2014-11-03 21:13:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-03 21:14:29]

Patchset 1 (id:??) landed as
https://crrev.com/4c65a7f95d9d37808d89c586d5f1a47147cb67db
Cr-Commit-Position: refs/heads/master@{#302479}