Convert plugin and GPU process to brokered handle duplication.

BUG=119250
Review URL: https://chromiumcodereview.appspot.com/9958034

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@132303 0039d316-1c4b-4281-b951-d872f2087c98
bool CommandBufferProxyImpl::SetSurfaceVisible(bool visible) {
  if (last_state_.error != gpu::error::kNoError)
    return false;

  return Send(new GpuCommandBufferMsg_SetSurfaceVisible(route_id_, visible));
}

bool CommandBufferProxyImpl::SetSurfaceVisible(bool visible) {
  if (last_state_.error != gpu::error::kNoError)
    return false;

  return Send(new GpuCommandBufferMsg_SetSurfaceVisible(route_id_, visible));
}
