When reenabling blink_platform_unittests[1], following tests failed and were disabled:

MemoryCacheTest.ClientRemoval_Basic
MemoryCacheTest.ClientRemoval_MultipleResourceMaps
MemoryCacheTest.ResourcePruningAtEndOfTask_Basic
MemoryCacheTest.ResourcePruningAtEndOfTask_MultipleResourceMaps
MemoryCacheTest.VeryLargeResourceAccounting

Assigning to platform/loader/OWNERS for triage.

[1] https://chromium-review.googlesource.com/c/chromium/src/+/1088913