GitLab

Create a method for inserting copies of a DerivedElementType into a
ListContainer. In a follow up cl, this method will be used to insert
DrawQuads into a render pass quad list.

Test: cc_unittests
Bug: 1022544
Change-Id: Ideb864ab2f46e32c08989150a426e77a213b23e5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2064468
Commit-Queue: Sasha McIntosh <sashamcintosh@chromium.org>
Reviewed-by: Khushal <khushalsagar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#742948}