dskiba@ Please advise on the correct *MemoryDump function to use for this reporting and assign back to me. thx.

I saw a comment that suggested the correct way to do this is with AddSuballocation.

I think we should report shared resources (env and block cache) as follows:

1. Include size of a shared resource to DB's total number
2. Report shared resource separately
3. Suballocate shared resource from DB

For example for block cache:

1. Size of block cache is already included to DB::GetProperty("approximate-memory-usage"). The only change here is to report databases as "leveldatabase/db/0x..." instead of "leveldatabase/0x..." for consistency.

2. Report size of block cache as "leveldatabase/block_cache/0x....".

3. Suballocate "leveldatabase/block_cache/0x...." from "leveldatabase/db/0x...".

And then memory-infra should correctly calculate totals for "leveldatabase" and each "leveldatabase/db". The only thing is that this calculation is done in the UI now, so there is no way we can write a unittest. Although I think there is work to move that calculation to Chrome itself.

In the end we should end up with "leveldatabase" provider that surfaces:

1. Totals per shared resource (block cache, env).
2. Totals per DB (with shared resource accounted proportionally).

ssid@, does this sound good to you? Who is responsible for moving calculation of totals from UI to Chrome itself?

ssid@, please see previous comment.