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Before this change, only output pictures were traced. This CL adds
tracing for the output (task) queue and the reorder queue. This memory
is held in IOSurfaces, and isn't attributed to Chrome in other ways.

Based on results from this new memory tracing, this CL increases the
number of requested picture buffers significantly, to avoid
pathological cases where we continue to decode pictures after running
out of picture buffers.

Bug: 840548
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: I026a8b4126a176112919f47e30c42f11e1f96b7c
Reviewed-on: https://chromium-review.googlesource.com/1053222
Commit-Queue: Dan Sanders <sandersd@chromium.org>
Reviewed-by: ccameron <ccameron@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558853}