GitLab

This reverts commit 3558d80a.

Reason for revert: Suspected cause of build failure on android-official:

https://ci.chromium.org/p/chromium/builders/ci/android-official/1056

[13692/25621] SOLINK ./libaudio_unittests__library.so
FAILED: libaudio_unittests__library.so libaudio_unittests__library.so.TOC lib.unstripped/libaudio_unittests__library.so lib.unstripped/libaudio_unittests__library.so.map.gz
/b/s/w/ir/cipd_bin_packages/cpython/bin/python "../../build/toolchain/gcc_solink_wrapper.py" --reade...(too long)
ld.lld: error: undefined hidden symbol: base::(anonymous namespace)::g_discardable_allocator (.llvm.16724700302094337840)
>>> referenced by run_all_unittests.cc:0 (../../media/test/run_all_unittests.cc:0)
>>>               thinlto-cache/llvmcache-3F27182A7CE8A475288094E8A454CB68C4740658:(TestSuiteNoAtExit::Initialize())

Original change's description:
> Proactively purging discardable memory on Desktop
> 
> This CL adds a way for ClientDiscardableSharedMemoryManager to discard
> unlocked discardable memory locally. To achieve this, it keeps track
> of all locked and unlocked, unpurged instances. These are then purged
> all at once when ReleaseFreeMemory() is called.
> 
> This is guarded by a new feature which is disabled by default, and as
> such there is no behaviour change by default.
> 
> Bug: 1109209
> Change-Id: I7755d714ff354e831557627fda401751384392b8
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2321400
> Commit-Queue: Thiabaud Engelbrecht <thiabaud@google.com>
> Reviewed-by: Peng Huang <penghuang@chromium.org>
> Reviewed-by: Benoit L <lizeb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#798630}

TBR=penghuang@chromium.org,lizeb@chromium.org,thiabaud@google.com

Change-Id: I39ddd002be3753d1339501c74df866d898ad53a4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1109209
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2360121Reviewed-by: Thomas Anderson <thomasanderson@chromium.org>
Commit-Queue: Thomas Anderson <thomasanderson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798796}