VideoFrameSubmitter to use alloctor's copy

The LSI allocators previously did not store a copy of the last generated
LSI. As a result, many call sites would have to keep their own copies.

Now that the LSI allocators have their own copies, the call sites can be
updated to no longer store a separate copy.

VideoFrameSubmitter is one such call site.

BUG=759031

Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
Change-Id: Ia4fde6fdb870c87d1852edd1f4a33a89f7cc9743
Reviewed-on: https://chromium-review.googlesource.com/1034390
Commit-Queue: Chris Blume <[email protected]>
Reviewed-by: Kenneth Russell <[email protected]>
Reviewed-by: Fady Samuel <[email protected]>
Cr-Commit-Position: refs/heads/master@{#555541}
2 files changed