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This reverts:
https://chromium-review.googlesource.com/c/chromium/src/+/1123169
https://chromium-review.googlesource.com/c/chromium/src/+/1141102

...which are the gpu and oop raster versions of the same change,
respectively.

There was some hope that by freeing fewer resources we would help with
input latency, but this does not appear to have the desired effect in
either UMA or on bots.

Because this is a 4mb regression on Android (and maybe 12mb in WebView)
revert these two changes.

Bug: 863756, 865617
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: I64eb735700ed1b704e191281ff79a01bccaff4e5
Reviewed-on: https://chromium-review.googlesource.com/1149093Reviewed-by: Eric Karl <ericrk@chromium.org>
Commit-Queue: enne <enne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577956}